40390480

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{547}}^1$

素因数の和:644

約数の個数: 80

約数和(自身を含む): 102743424

約数和(自身を除く): 62352944

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 71, 80, 104, 130, 142, 208, 260, 284, 355, 520, 547, 568, 710, 923, 1040, 1094, 1136, 1420, 1846, 2188, 2735, 2840, 3692, 4376, 4615, 5470, 5680, 7111, 7384, 8752, 9230, 10940, 14222, 14768, 18460, 21880, 28444, 35555, 36920, 38837, 43760, 56888, 71110, 73840, 77674, 113776, 142220, 155348, 194185, 284440, 310696, 388370, 504881, 568880, 621392, 776740, 1009762, 1553480, 2019524, 2524405, 3106960, 4039048, 5048810, 8078096, 10097620, 20195240, 40390480]

約数ペア:

[(1, 40390480), (2, 20195240), (4, 10097620), (5, 8078096), (8, 5048810), (10, 4039048), (13, 3106960), (16, 2524405), (20, 2019524), (26, 1553480), (40, 1009762), (52, 776740), (65, 621392), (71, 568880), (80, 504881), (104, 388370), (130, 310696), (142, 284440), (208, 194185), (260, 155348), (284, 142220), (355, 113776), (520, 77674), (547, 73840), (568, 71110), (710, 56888), (923, 43760), (1040, 38837), (1094, 36920), (1136, 35555), (1420, 28444), (1846, 21880), (2188, 18460), (2735, 14768), (2840, 14222), (3692, 10940), (4376, 9230), (4615, 8752), (5470, 7384), (5680, 7111)]