81270860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:156

約数の個数: 96

約数和(自身を含む): 194793984

約数和(自身を除く): 113523124

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 71, 86, 110, 121, 142, 172, 215, 220, 242, 284, 355, 430, 473, 484, 605, 710, 781, 860, 946, 1210, 1331, 1420, 1562, 1892, 2365, 2420, 2662, 3053, 3124, 3905, 4730, 5203, 5324, 6106, 6655, 7810, 8591, 9460, 10406, 12212, 13310, 15265, 15620, 17182, 20812, 26015, 26620, 30530, 33583, 34364, 42955, 52030, 57233, 61060, 67166, 85910, 94501, 104060, 114466, 134332, 167915, 171820, 189002, 228932, 286165, 335830, 369413, 378004, 472505, 572330, 671660, 738826, 945010, 1144660, 1477652, 1847065, 1890020, 3694130, 4063543, 7388260, 8127086, 16254172, 20317715, 40635430, 81270860]

約数ペア:

[(1, 81270860), (2, 40635430), (4, 20317715), (5, 16254172), (10, 8127086), (11, 7388260), (20, 4063543), (22, 3694130), (43, 1890020), (44, 1847065), (55, 1477652), (71, 1144660), (86, 945010), (110, 738826), (121, 671660), (142, 572330), (172, 472505), (215, 378004), (220, 369413), (242, 335830), (284, 286165), (355, 228932), (430, 189002), (473, 171820), (484, 167915), (605, 134332), (710, 114466), (781, 104060), (860, 94501), (946, 85910), (1210, 67166), (1331, 61060), (1420, 57233), (1562, 52030), (1892, 42955), (2365, 34364), (2420, 33583), (2662, 30530), (3053, 26620), (3124, 26015), (3905, 20812), (4730, 17182), (5203, 15620), (5324, 15265), (6106, 13310), (6655, 12212), (7810, 10406), (8591, 9460)]