21593360

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8707}}^1$

素因数の和:8751

約数の個数: 40

約数和(自身を含む): 51830016

約数和(自身を除く): 30236656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8707, 17414, 34828, 43535, 69656, 87070, 139312, 174140, 269917, 348280, 539834, 696560, 1079668, 1349585, 2159336, 2699170, 4318672, 5398340, 10796680, 21593360]

約数ペア:

[(1, 21593360), (2, 10796680), (4, 5398340), (5, 4318672), (8, 2699170), (10, 2159336), (16, 1349585), (20, 1079668), (31, 696560), (40, 539834), (62, 348280), (80, 269917), (124, 174140), (155, 139312), (248, 87070), (310, 69656), (496, 43535), (620, 34828), (1240, 17414), (2480, 8707)]