86999140

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 186810624

約数和(自身を除く): 99811484

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 197, 284, 311, 355, 394, 622, 710, 788, 985, 1244, 1420, 1555, 1970, 3110, 3940, 6220, 13987, 22081, 27974, 44162, 55948, 61267, 69935, 88324, 110405, 122534, 139870, 220810, 245068, 279740, 306335, 441620, 612670, 1225340, 4349957, 8699914, 17399828, 21749785, 43499570, 86999140]

約数ペア:

[(1, 86999140), (2, 43499570), (4, 21749785), (5, 17399828), (10, 8699914), (20, 4349957), (71, 1225340), (142, 612670), (197, 441620), (284, 306335), (311, 279740), (355, 245068), (394, 220810), (622, 139870), (710, 122534), (788, 110405), (985, 88324), (1244, 69935), (1420, 61267), (1555, 55948), (1970, 44162), (3110, 27974), (3940, 22081), (6220, 13987)]