64631320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{124291}}^1$

素因数の和:124315

約数の個数: 32

約数和(自身を含む): 156607920

約数和(自身を除く): 91976600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 124291, 248582, 497164, 621455, 994328, 1242910, 1615783, 2485820, 3231566, 4971640, 6463132, 8078915, 12926264, 16157830, 32315660, 64631320]

約数ペア:

[(1, 64631320), (2, 32315660), (4, 16157830), (5, 12926264), (8, 8078915), (10, 6463132), (13, 4971640), (20, 3231566), (26, 2485820), (40, 1615783), (52, 1242910), (65, 994328), (104, 621455), (130, 497164), (260, 248582), (520, 124291)]