1971125390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{489113}}^1$

素因数の和:489164

約数の個数: 32

約数和(自身を含む): 3944215296

約数和(自身を除く): 1973089906

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 489113, 978226, 2445565, 4891130, 6358469, 12716938, 15162503, 30325006, 31792345, 63584690, 75812515, 151625030, 197112539, 394225078, 985562695, 1971125390]

約数ペア:

[(1, 1971125390), (2, 985562695), (5, 394225078), (10, 197112539), (13, 151625030), (26, 75812515), (31, 63584690), (62, 31792345), (65, 30325006), (130, 15162503), (155, 12716938), (310, 6358469), (403, 4891130), (806, 2445565), (2015, 978226), (4030, 489113)]