72445720

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{21821}}^1$

素因数の和:21915

約数の個数: 32

約数和(自身を含む): 164974320

約数和(自身を除く): 92528600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 21821, 43642, 87284, 109105, 174568, 218210, 436420, 872840, 1811143, 3622286, 7244572, 9055715, 14489144, 18111430, 36222860, 72445720]

約数ペア:

[(1, 72445720), (2, 36222860), (4, 18111430), (5, 14489144), (8, 9055715), (10, 7244572), (20, 3622286), (40, 1811143), (83, 872840), (166, 436420), (332, 218210), (415, 174568), (664, 109105), (830, 87284), (1660, 43642), (3320, 21821)]