21669140

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{157}}^1$

素因数の和:336

約数の個数: 48

約数和(自身を含む): 46929792

約数和(自身を除く): 25260652

約数列:

[1, 2, 4, 5, 10, 20, 67, 103, 134, 157, 206, 268, 314, 335, 412, 515, 628, 670, 785, 1030, 1340, 1570, 2060, 3140, 6901, 10519, 13802, 16171, 21038, 27604, 32342, 34505, 42076, 52595, 64684, 69010, 80855, 105190, 138020, 161710, 210380, 323420, 1083457, 2166914, 4333828, 5417285, 10834570, 21669140]

約数ペア:

[(1, 21669140), (2, 10834570), (4, 5417285), (5, 4333828), (10, 2166914), (20, 1083457), (67, 323420), (103, 210380), (134, 161710), (157, 138020), (206, 105190), (268, 80855), (314, 69010), (335, 64684), (412, 52595), (515, 42076), (628, 34505), (670, 32342), (785, 27604), (1030, 21038), (1340, 16171), (1570, 13802), (2060, 10519), (3140, 6901)]