81507680

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16433}}^1$

素因数の和:16479

約数の個数: 48

約数和(自身を含む): 198785664

約数和(自身を除く): 117277984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 16433, 32866, 65732, 82165, 131464, 164330, 262928, 328660, 509423, 525856, 657320, 1018846, 1314640, 2037692, 2547115, 2629280, 4075384, 5094230, 8150768, 10188460, 16301536, 20376920, 40753840, 81507680]

約数ペア:

[(1, 81507680), (2, 40753840), (4, 20376920), (5, 16301536), (8, 10188460), (10, 8150768), (16, 5094230), (20, 4075384), (31, 2629280), (32, 2547115), (40, 2037692), (62, 1314640), (80, 1018846), (124, 657320), (155, 525856), (160, 509423), (248, 328660), (310, 262928), (496, 164330), (620, 131464), (992, 82165), (1240, 65732), (2480, 32866), (4960, 16433)]