389408020

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{4093}}^1$

素因数の和:4240

約数の個数: 48

約数和(自身を含む): 841857408

約数和(自身を除く): 452449388

約数列:

[1, 2, 4, 5, 10, 20, 67, 71, 134, 142, 268, 284, 335, 355, 670, 710, 1340, 1420, 4093, 4757, 8186, 9514, 16372, 19028, 20465, 23785, 40930, 47570, 81860, 95140, 274231, 290603, 548462, 581206, 1096924, 1162412, 1371155, 1453015, 2742310, 2906030, 5484620, 5812060, 19470401, 38940802, 77881604, 97352005, 194704010, 389408020]

約数ペア:

[(1, 389408020), (2, 194704010), (4, 97352005), (5, 77881604), (10, 38940802), (20, 19470401), (67, 5812060), (71, 5484620), (134, 2906030), (142, 2742310), (268, 1453015), (284, 1371155), (335, 1162412), (355, 1096924), (670, 581206), (710, 548462), (1340, 290603), (1420, 274231), (4093, 95140), (4757, 81860), (8186, 47570), (9514, 40930), (16372, 23785), (19028, 20465)]