389615980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^3\times {\mathrm{8867}}^1$

素因数の和:8915

約数の個数: 48

約数和(自身を含む): 886445280

約数和(自身を除く): 496829300

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 338, 676, 845, 1690, 2197, 3380, 4394, 8788, 8867, 10985, 17734, 21970, 35468, 43940, 44335, 88670, 115271, 177340, 230542, 461084, 576355, 1152710, 1498523, 2305420, 2997046, 5994092, 7492615, 14985230, 19480799, 29970460, 38961598, 77923196, 97403995, 194807990, 389615980]

約数ペア:

[(1, 389615980), (2, 194807990), (4, 97403995), (5, 77923196), (10, 38961598), (13, 29970460), (20, 19480799), (26, 14985230), (52, 7492615), (65, 5994092), (130, 2997046), (169, 2305420), (260, 1498523), (338, 1152710), (676, 576355), (845, 461084), (1690, 230542), (2197, 177340), (3380, 115271), (4394, 88670), (8788, 44335), (8867, 43940), (10985, 35468), (17734, 21970)]