420348520

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{126611}}^1$

素因数の和:126705

約数の個数: 32

約数和(自身を含む): 957186720

約数和(自身を除く): 536838200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 126611, 253222, 506444, 633055, 1012888, 1266110, 2532220, 5064440, 10508713, 21017426, 42034852, 52543565, 84069704, 105087130, 210174260, 420348520]

約数ペア:

[(1, 420348520), (2, 210174260), (4, 105087130), (5, 84069704), (8, 52543565), (10, 42034852), (20, 21017426), (40, 10508713), (83, 5064440), (166, 2532220), (332, 1266110), (415, 1012888), (664, 633055), (830, 506444), (1660, 253222), (3320, 126611)]