81555340

素因数分解:

$2^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{1637}}^1$

素因数の和:1746

約数の個数: 48

約数和(自身を含む): 178319232

約数和(自身を除く): 96763892

約数列:

[1, 2, 4, 5, 10, 20, 47, 53, 94, 106, 188, 212, 235, 265, 470, 530, 940, 1060, 1637, 2491, 3274, 4982, 6548, 8185, 9964, 12455, 16370, 24910, 32740, 49820, 76939, 86761, 153878, 173522, 307756, 347044, 384695, 433805, 769390, 867610, 1538780, 1735220, 4077767, 8155534, 16311068, 20388835, 40777670, 81555340]

約数ペア:

[(1, 81555340), (2, 40777670), (4, 20388835), (5, 16311068), (10, 8155534), (20, 4077767), (47, 1735220), (53, 1538780), (94, 867610), (106, 769390), (188, 433805), (212, 384695), (235, 347044), (265, 307756), (470, 173522), (530, 153878), (940, 86761), (1060, 76939), (1637, 49820), (2491, 32740), (3274, 24910), (4982, 16370), (6548, 12455), (8185, 9964)]