51142720

素因数分解:

$2^6\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2251}}^1$

素因数の和:2339

約数の個数: 56

約数和(自身を含む): 123553728

約数和(自身を除く): 72411008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 71, 80, 142, 160, 284, 320, 355, 568, 710, 1136, 1420, 2251, 2272, 2840, 4502, 4544, 5680, 9004, 11255, 11360, 18008, 22510, 22720, 36016, 45020, 72032, 90040, 144064, 159821, 180080, 319642, 360160, 639284, 720320, 799105, 1278568, 1598210, 2557136, 3196420, 5114272, 6392840, 10228544, 12785680, 25571360, 51142720]

約数ペア:

[(1, 51142720), (2, 25571360), (4, 12785680), (5, 10228544), (8, 6392840), (10, 5114272), (16, 3196420), (20, 2557136), (32, 1598210), (40, 1278568), (64, 799105), (71, 720320), (80, 639284), (142, 360160), (160, 319642), (284, 180080), (320, 159821), (355, 144064), (568, 90040), (710, 72032), (1136, 45020), (1420, 36016), (2251, 22720), (2272, 22510), (2840, 18008), (4502, 11360), (4544, 11255), (5680, 9004)]