21783390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{397}}^1$

素因数の和:497

約数の個数: 64

約数和(自身を含む): 55019520

約数和(自身を除く): 33236130

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 59, 62, 93, 118, 155, 177, 186, 295, 310, 354, 397, 465, 590, 794, 885, 930, 1191, 1770, 1829, 1985, 2382, 3658, 3970, 5487, 5955, 9145, 10974, 11910, 12307, 18290, 23423, 24614, 27435, 36921, 46846, 54870, 61535, 70269, 73842, 117115, 123070, 140538, 184605, 234230, 351345, 369210, 702690, 726113, 1452226, 2178339, 3630565, 4356678, 7261130, 10891695, 21783390]

約数ペア:

[(1, 21783390), (2, 10891695), (3, 7261130), (5, 4356678), (6, 3630565), (10, 2178339), (15, 1452226), (30, 726113), (31, 702690), (59, 369210), (62, 351345), (93, 234230), (118, 184605), (155, 140538), (177, 123070), (186, 117115), (295, 73842), (310, 70269), (354, 61535), (397, 54870), (465, 46846), (590, 36921), (794, 27435), (885, 24614), (930, 23423), (1191, 18290), (1770, 12307), (1829, 11910), (1985, 10974), (2382, 9145), (3658, 5955), (3970, 5487)]