20931510

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:429

約数の個数: 64

約数和(自身を含む): 52752384

約数和(自身を除く): 31820874

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 31, 62, 71, 93, 142, 155, 186, 213, 310, 317, 355, 426, 465, 634, 710, 930, 951, 1065, 1585, 1902, 2130, 2201, 3170, 4402, 4755, 6603, 9510, 9827, 11005, 13206, 19654, 22010, 22507, 29481, 33015, 45014, 49135, 58962, 66030, 67521, 98270, 112535, 135042, 147405, 225070, 294810, 337605, 675210, 697717, 1395434, 2093151, 3488585, 4186302, 6977170, 10465755, 20931510]

約数ペア:

[(1, 20931510), (2, 10465755), (3, 6977170), (5, 4186302), (6, 3488585), (10, 2093151), (15, 1395434), (30, 697717), (31, 675210), (62, 337605), (71, 294810), (93, 225070), (142, 147405), (155, 135042), (186, 112535), (213, 98270), (310, 67521), (317, 66030), (355, 58962), (426, 49135), (465, 45014), (634, 33015), (710, 29481), (930, 22507), (951, 22010), (1065, 19654), (1585, 13206), (1902, 11005), (2130, 9827), (2201, 9510), (3170, 6603), (4402, 4755)]