31504120

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{11093}}^1$

素因数の和:11175

約数の個数: 32

約数和(自身を含む): 71889120

約数和(自身を除く): 40385000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 11093, 22186, 44372, 55465, 88744, 110930, 221860, 443720, 787603, 1575206, 3150412, 3938015, 6300824, 7876030, 15752060, 31504120]

約数ペア:

[(1, 31504120), (2, 15752060), (4, 7876030), (5, 6300824), (8, 3938015), (10, 3150412), (20, 1575206), (40, 787603), (71, 443720), (142, 221860), (284, 110930), (355, 88744), (568, 55465), (710, 44372), (1420, 22186), (2840, 11093)]