81314350

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^2\times {\mathrm{9623}}^1$

素因数の和:9661

約数の個数: 36

約数和(自身を含む): 163790856

約数和(自身を除く): 82476506

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 169, 325, 338, 650, 845, 1690, 4225, 8450, 9623, 19246, 48115, 96230, 125099, 240575, 250198, 481150, 625495, 1250990, 1626287, 3127475, 3252574, 6254950, 8131435, 16262870, 40657175, 81314350]

約数ペア:

[(1, 81314350), (2, 40657175), (5, 16262870), (10, 8131435), (13, 6254950), (25, 3252574), (26, 3127475), (50, 1626287), (65, 1250990), (130, 625495), (169, 481150), (325, 250198), (338, 240575), (650, 125099), (845, 96230), (1690, 48115), (4225, 19246), (8450, 9623)]