28213840

素因数分解:

$2^4\times 5^1\times {\mathrm{113}}^1\times {\mathrm{3121}}^1$

素因数の和:3247

約数の個数: 40

約数和(自身を含む): 66198888

約数和(自身を除く): 37985048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 113, 226, 452, 565, 904, 1130, 1808, 2260, 3121, 4520, 6242, 9040, 12484, 15605, 24968, 31210, 49936, 62420, 124840, 249680, 352673, 705346, 1410692, 1763365, 2821384, 3526730, 5642768, 7053460, 14106920, 28213840]

約数ペア:

[(1, 28213840), (2, 14106920), (4, 7053460), (5, 5642768), (8, 3526730), (10, 2821384), (16, 1763365), (20, 1410692), (40, 705346), (80, 352673), (113, 249680), (226, 124840), (452, 62420), (565, 49936), (904, 31210), (1130, 24968), (1808, 15605), (2260, 12484), (3121, 9040), (4520, 6242)]