489391340

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1\times {\mathrm{557}}^1$

素因数の和:986

約数の個数: 48

約数和(自身を含む): 1039433472

約数和(自身を除く): 550042132

約数列:

[1, 2, 4, 5, 10, 20, 197, 223, 394, 446, 557, 788, 892, 985, 1114, 1115, 1970, 2228, 2230, 2785, 3940, 4460, 5570, 11140, 43931, 87862, 109729, 124211, 175724, 219458, 219655, 248422, 438916, 439310, 496844, 548645, 621055, 878620, 1097290, 1242110, 2194580, 2484220, 24469567, 48939134, 97878268, 122347835, 244695670, 489391340]

約数ペア:

[(1, 489391340), (2, 244695670), (4, 122347835), (5, 97878268), (10, 48939134), (20, 24469567), (197, 2484220), (223, 2194580), (394, 1242110), (446, 1097290), (557, 878620), (788, 621055), (892, 548645), (985, 496844), (1114, 439310), (1115, 438916), (1970, 248422), (2228, 219655), (2230, 219458), (2785, 175724), (3940, 124211), (4460, 109729), (5570, 87862), (11140, 43931)]