20916630

素因数分解:

$2^1\times 3^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:81

約数の個数: 240

約数和(自身を含む): 71508096

約数和(自身を除く): 50591466

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 27, 30, 31, 34, 35, 42, 45, 49, 51, 54, 62, 63, 70, 81, 85, 90, 93, 98, 102, 105, 119, 126, 135, 147, 153, 155, 162, 170, 186, 189, 210, 217, 238, 245, 255, 270, 279, 294, 306, 310, 315, 357, 378, 405, 434, 441, 459, 465, 490, 510, 527, 558, 567, 595, 630, 651, 714, 735, 765, 810, 833, 837, 882, 918, 930, 945, 1054, 1071, 1085, 1134, 1190, 1302, 1323, 1377, 1395, 1470, 1519, 1530, 1581, 1666, 1674, 1785, 1890, 1953, 2142, 2170, 2205, 2295, 2499, 2511, 2635, 2646, 2754, 2790, 2835, 3038, 3162, 3213, 3255, 3570, 3689, 3906, 3969, 4165, 4185, 4410, 4557, 4590, 4743, 4998, 5022, 5270, 5355, 5670, 5859, 6426, 6510, 6615, 6885, 7378, 7497, 7595, 7905, 7938, 8330, 8370, 9114, 9486, 9639, 9765, 10710, 11067, 11718, 12495, 12555, 13230, 13671, 13770, 14229, 14994, 15190, 15810, 16065, 17577, 18445, 19278, 19530, 19845, 22134, 22491, 22785, 23715, 24990, 25110, 25823, 27342, 28458, 29295, 32130, 33201, 35154, 36890, 37485, 39690, 41013, 42687, 44982, 45570, 47430, 48195, 51646, 55335, 58590, 66402, 67473, 68355, 71145, 74970, 77469, 82026, 85374, 87885, 96390, 99603, 110670, 112455, 123039, 129115, 134946, 136710, 142290, 154938, 166005, 175770, 199206, 205065, 213435, 224910, 232407, 246078, 258230, 298809, 332010, 337365, 387345, 410130, 426870, 464814, 498015, 597618, 615195, 674730, 697221, 774690, 996030, 1162035, 1230390, 1394442, 1494045, 2091663, 2324070, 2988090, 3486105, 4183326, 6972210, 10458315, 20916630]

約数ペア:

[(1, 20916630), (2, 10458315), (3, 6972210), (5, 4183326), (6, 3486105), (7, 2988090), (9, 2324070), (10, 2091663), (14, 1494045), (15, 1394442), (17, 1230390), (18, 1162035), (21, 996030), (27, 774690), (30, 697221), (31, 674730), (34, 615195), (35, 597618), (42, 498015), (45, 464814), (49, 426870), (51, 410130), (54, 387345), (62, 337365), (63, 332010), (70, 298809), (81, 258230), (85, 246078), (90, 232407), (93, 224910), (98, 213435), (102, 205065), (105, 199206), (119, 175770), (126, 166005), (135, 154938), (147, 142290), (153, 136710), (155, 134946), (162, 129115), (170, 123039), (186, 112455), (189, 110670), (210, 99603), (217, 96390), (238, 87885), (245, 85374), (255, 82026), (270, 77469), (279, 74970), (294, 71145), (306, 68355), (310, 67473), (315, 66402), (357, 58590), (378, 55335), (405, 51646), (434, 48195), (441, 47430), (459, 45570), (465, 44982), (490, 42687), (510, 41013), (527, 39690), (558, 37485), (567, 36890), (595, 35154), (630, 33201), (651, 32130), (714, 29295), (735, 28458), (765, 27342), (810, 25823), (833, 25110), (837, 24990), (882, 23715), (918, 22785), (930, 22491), (945, 22134), (1054, 19845), (1071, 19530), (1085, 19278), (1134, 18445), (1190, 17577), (1302, 16065), (1323, 15810), (1377, 15190), (1395, 14994), (1470, 14229), (1519, 13770), (1530, 13671), (1581, 13230), (1666, 12555), (1674, 12495), (1785, 11718), (1890, 11067), (1953, 10710), (2142, 9765), (2170, 9639), (2205, 9486), (2295, 9114), (2499, 8370), (2511, 8330), (2635, 7938), (2646, 7905), (2754, 7595), (2790, 7497), (2835, 7378), (3038, 6885), (3162, 6615), (3213, 6510), (3255, 6426), (3570, 5859), (3689, 5670), (3906, 5355), (3969, 5270), (4165, 5022), (4185, 4998), (4410, 4743), (4557, 4590)]