20021290

素因数分解:

$2^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{173}}^1$

素因数の和:414

約数の個数: 32

約数和(自身を含む): 36982656

約数和(自身を除く): 16961366

約数列:

[1, 2, 5, 10, 71, 142, 163, 173, 326, 346, 355, 710, 815, 865, 1630, 1730, 11573, 12283, 23146, 24566, 28199, 56398, 57865, 61415, 115730, 122830, 140995, 281990, 2002129, 4004258, 10010645, 20021290]

約数ペア:

[(1, 20021290), (2, 10010645), (5, 4004258), (10, 2002129), (71, 281990), (142, 140995), (163, 122830), (173, 115730), (326, 61415), (346, 57865), (355, 56398), (710, 28199), (815, 24566), (865, 23146), (1630, 12283), (1730, 11573)]