28588520

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{83}}^1\times {\mathrm{109}}^1$

素因数の和:282

約数の個数: 64

約数和(自身を含む): 66528000

約数和(自身を除く): 37939480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 83, 109, 158, 166, 218, 316, 332, 395, 415, 436, 545, 632, 664, 790, 830, 872, 1090, 1580, 1660, 2180, 3160, 3320, 4360, 6557, 8611, 9047, 13114, 17222, 18094, 26228, 32785, 34444, 36188, 43055, 45235, 52456, 65570, 68888, 72376, 86110, 90470, 131140, 172220, 180940, 262280, 344440, 361880, 714713, 1429426, 2858852, 3573565, 5717704, 7147130, 14294260, 28588520]

約数ペア:

[(1, 28588520), (2, 14294260), (4, 7147130), (5, 5717704), (8, 3573565), (10, 2858852), (20, 1429426), (40, 714713), (79, 361880), (83, 344440), (109, 262280), (158, 180940), (166, 172220), (218, 131140), (316, 90470), (332, 86110), (395, 72376), (415, 68888), (436, 65570), (545, 52456), (632, 45235), (664, 43055), (790, 36188), (830, 34444), (872, 32785), (1090, 26228), (1580, 18094), (1660, 17222), (2180, 13114), (3160, 9047), (3320, 8611), (4360, 6557)]