20401516

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{331}}^1\times {\mathrm{811}}^1$

素因数の和:1165

約数の個数: 24

約数和(自身を含む): 37741760

約数和(自身を除く): 17340244

約数列:

[1, 2, 4, 19, 38, 76, 331, 662, 811, 1324, 1622, 3244, 6289, 12578, 15409, 25156, 30818, 61636, 268441, 536882, 1073764, 5100379, 10200758, 20401516]

約数ペア:

[(1, 20401516), (2, 10200758), (4, 5100379), (19, 1073764), (38, 536882), (76, 268441), (331, 61636), (662, 30818), (811, 25156), (1324, 15409), (1622, 12578), (3244, 6289)]