81860020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{607}}^1\times {\mathrm{613}}^1$

素因数の和:1240

約数の個数: 48

約数和(自身を含む): 188149248

約数和(自身を除く): 106289228

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 607, 613, 1214, 1226, 2428, 2452, 3035, 3065, 6070, 6130, 6677, 6743, 12140, 12260, 13354, 13486, 26708, 26972, 33385, 33715, 66770, 67430, 133540, 134860, 372091, 744182, 1488364, 1860455, 3720910, 4093001, 7441820, 8186002, 16372004, 20465005, 40930010, 81860020]

約数ペア:

[(1, 81860020), (2, 40930010), (4, 20465005), (5, 16372004), (10, 8186002), (11, 7441820), (20, 4093001), (22, 3720910), (44, 1860455), (55, 1488364), (110, 744182), (220, 372091), (607, 134860), (613, 133540), (1214, 67430), (1226, 66770), (2428, 33715), (2452, 33385), (3035, 26972), (3065, 26708), (6070, 13486), (6130, 13354), (6677, 12260), (6743, 12140)]