78398840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{150767}}^1$

素因数の和:150791

約数の個数: 32

約数和(自身を含む): 189967680

約数和(自身を除く): 111568840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 150767, 301534, 603068, 753835, 1206136, 1507670, 1959971, 3015340, 3919942, 6030680, 7839884, 9799855, 15679768, 19599710, 39199420, 78398840]

約数ペア:

[(1, 78398840), (2, 39199420), (4, 19599710), (5, 15679768), (8, 9799855), (10, 7839884), (13, 6030680), (20, 3919942), (26, 3015340), (40, 1959971), (52, 1507670), (65, 1206136), (104, 753835), (130, 603068), (260, 301534), (520, 150767)]