217855845

素因数分解:

$3^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{37529}}^1$

素因数の和:37586

約数の個数: 32

約数和(自身を含む): 396316800

約数和(自身を除く): 178460955

約数列:

[1, 3, 5, 9, 15, 27, 43, 45, 129, 135, 215, 387, 645, 1161, 1935, 5805, 37529, 112587, 187645, 337761, 562935, 1013283, 1613747, 1688805, 4841241, 5066415, 8068735, 14523723, 24206205, 43571169, 72618615, 217855845]

約数ペア:

[(1, 217855845), (3, 72618615), (5, 43571169), (9, 24206205), (15, 14523723), (27, 8068735), (43, 5066415), (45, 4841241), (129, 1688805), (135, 1613747), (215, 1013283), (387, 562935), (645, 337761), (1161, 187645), (1935, 112587), (5805, 37529)]