31374945

素因数分解:

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

素因数の和:82

約数の個数: 144

約数和(自身を含む): 71705088

約数和(自身を除く): 40330143

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 31, 35, 45, 49, 51, 63, 81, 85, 93, 105, 119, 135, 147, 153, 155, 189, 217, 243, 245, 255, 279, 315, 357, 405, 441, 459, 465, 527, 567, 595, 651, 735, 765, 833, 837, 945, 1071, 1085, 1215, 1323, 1377, 1395, 1519, 1581, 1701, 1785, 1953, 2205, 2295, 2499, 2511, 2635, 2835, 3213, 3255, 3689, 3969, 4131, 4165, 4185, 4557, 4743, 5355, 5859, 6615, 6885, 7497, 7533, 7595, 7905, 8505, 9639, 9765, 11067, 11907, 12495, 12555, 13671, 14229, 16065, 17577, 18445, 19845, 20655, 22491, 22785, 23715, 25823, 28917, 29295, 33201, 37485, 37665, 41013, 42687, 48195, 52731, 55335, 59535, 67473, 68355, 71145, 77469, 87885, 99603, 112455, 123039, 128061, 129115, 144585, 166005, 202419, 205065, 213435, 232407, 263655, 298809, 337365, 369117, 387345, 498015, 615195, 640305, 697221, 896427, 1012095, 1162035, 1494045, 1845585, 2091663, 3486105, 4482135, 6274989, 10458315, 31374945]

約数ペア:

[(1, 31374945), (3, 10458315), (5, 6274989), (7, 4482135), (9, 3486105), (15, 2091663), (17, 1845585), (21, 1494045), (27, 1162035), (31, 1012095), (35, 896427), (45, 697221), (49, 640305), (51, 615195), (63, 498015), (81, 387345), (85, 369117), (93, 337365), (105, 298809), (119, 263655), (135, 232407), (147, 213435), (153, 205065), (155, 202419), (189, 166005), (217, 144585), (243, 129115), (245, 128061), (255, 123039), (279, 112455), (315, 99603), (357, 87885), (405, 77469), (441, 71145), (459, 68355), (465, 67473), (527, 59535), (567, 55335), (595, 52731), (651, 48195), (735, 42687), (765, 41013), (833, 37665), (837, 37485), (945, 33201), (1071, 29295), (1085, 28917), (1215, 25823), (1323, 23715), (1377, 22785), (1395, 22491), (1519, 20655), (1581, 19845), (1701, 18445), (1785, 17577), (1953, 16065), (2205, 14229), (2295, 13671), (2499, 12555), (2511, 12495), (2635, 11907), (2835, 11067), (3213, 9765), (3255, 9639), (3689, 8505), (3969, 7905), (4131, 7595), (4165, 7533), (4185, 7497), (4557, 6885), (4743, 6615), (5355, 5859)]