20016990

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:136

約数の個数: 192

約数和(自身を含む): 66484800

約数和(自身を除く): 46467810

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 17, 18, 21, 27, 30, 34, 35, 42, 45, 49, 51, 54, 63, 70, 85, 89, 90, 98, 102, 105, 119, 126, 135, 147, 153, 170, 178, 189, 210, 238, 245, 255, 267, 270, 294, 306, 315, 357, 378, 441, 445, 459, 490, 510, 534, 595, 623, 630, 714, 735, 765, 801, 833, 882, 890, 918, 945, 1071, 1190, 1246, 1323, 1335, 1470, 1513, 1530, 1602, 1666, 1785, 1869, 1890, 2142, 2205, 2295, 2403, 2499, 2646, 2670, 3026, 3115, 3213, 3570, 3738, 4005, 4165, 4361, 4410, 4539, 4590, 4806, 4998, 5355, 5607, 6230, 6426, 6615, 7497, 7565, 8010, 8330, 8722, 9078, 9345, 10591, 10710, 11214, 12015, 12495, 13083, 13230, 13617, 14994, 15130, 16065, 16821, 18690, 21182, 21805, 22491, 22695, 24030, 24990, 26166, 27234, 28035, 31773, 32130, 33642, 37485, 39249, 40851, 43610, 44982, 45390, 52955, 56070, 63546, 65415, 68085, 74137, 74970, 78498, 81702, 84105, 95319, 105910, 112455, 117747, 130830, 136170, 148274, 158865, 168210, 190638, 196245, 204255, 222411, 224910, 235494, 285957, 317730, 370685, 392490, 408510, 444822, 476595, 571914, 588735, 667233, 741370, 953190, 1112055, 1177470, 1334466, 1429785, 2001699, 2224110, 2859570, 3336165, 4003398, 6672330, 10008495, 20016990]

約数ペア:

[(1, 20016990), (2, 10008495), (3, 6672330), (5, 4003398), (6, 3336165), (7, 2859570), (9, 2224110), (10, 2001699), (14, 1429785), (15, 1334466), (17, 1177470), (18, 1112055), (21, 953190), (27, 741370), (30, 667233), (34, 588735), (35, 571914), (42, 476595), (45, 444822), (49, 408510), (51, 392490), (54, 370685), (63, 317730), (70, 285957), (85, 235494), (89, 224910), (90, 222411), (98, 204255), (102, 196245), (105, 190638), (119, 168210), (126, 158865), (135, 148274), (147, 136170), (153, 130830), (170, 117747), (178, 112455), (189, 105910), (210, 95319), (238, 84105), (245, 81702), (255, 78498), (267, 74970), (270, 74137), (294, 68085), (306, 65415), (315, 63546), (357, 56070), (378, 52955), (441, 45390), (445, 44982), (459, 43610), (490, 40851), (510, 39249), (534, 37485), (595, 33642), (623, 32130), (630, 31773), (714, 28035), (735, 27234), (765, 26166), (801, 24990), (833, 24030), (882, 22695), (890, 22491), (918, 21805), (945, 21182), (1071, 18690), (1190, 16821), (1246, 16065), (1323, 15130), (1335, 14994), (1470, 13617), (1513, 13230), (1530, 13083), (1602, 12495), (1666, 12015), (1785, 11214), (1869, 10710), (1890, 10591), (2142, 9345), (2205, 9078), (2295, 8722), (2403, 8330), (2499, 8010), (2646, 7565), (2670, 7497), (3026, 6615), (3115, 6426), (3213, 6230), (3570, 5607), (3738, 5355), (4005, 4998), (4165, 4806), (4361, 4590), (4410, 4539)]