87859780

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1\times {\mathrm{379}}^1$

素因数の和:628

約数の個数: 48

約数和(自身を含む): 188838720

約数和(自身を除く): 100978940

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 173, 268, 335, 346, 379, 670, 692, 758, 865, 1340, 1516, 1730, 1895, 3460, 3790, 7580, 11591, 23182, 25393, 46364, 50786, 57955, 65567, 101572, 115910, 126965, 131134, 231820, 253930, 262268, 327835, 507860, 655670, 1311340, 4392989, 8785978, 17571956, 21964945, 43929890, 87859780]

約数ペア:

[(1, 87859780), (2, 43929890), (4, 21964945), (5, 17571956), (10, 8785978), (20, 4392989), (67, 1311340), (134, 655670), (173, 507860), (268, 327835), (335, 262268), (346, 253930), (379, 231820), (670, 131134), (692, 126965), (758, 115910), (865, 101572), (1340, 65567), (1516, 57955), (1730, 50786), (1895, 46364), (3460, 25393), (3790, 23182), (7580, 11591)]