65648020

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{557}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 141740928

約数和(自身を除く): 76092908

約数列:

[1, 2, 4, 5, 10, 20, 71, 83, 142, 166, 284, 332, 355, 415, 557, 710, 830, 1114, 1420, 1660, 2228, 2785, 5570, 5893, 11140, 11786, 23572, 29465, 39547, 46231, 58930, 79094, 92462, 117860, 158188, 184924, 197735, 231155, 395470, 462310, 790940, 924620, 3282401, 6564802, 13129604, 16412005, 32824010, 65648020]

約数ペア:

[(1, 65648020), (2, 32824010), (4, 16412005), (5, 13129604), (10, 6564802), (20, 3282401), (71, 924620), (83, 790940), (142, 462310), (166, 395470), (284, 231155), (332, 197735), (355, 184924), (415, 158188), (557, 117860), (710, 92462), (830, 79094), (1114, 58930), (1420, 46231), (1660, 39547), (2228, 29465), (2785, 23572), (5570, 11786), (5893, 11140)]