86387980

素因数分解:

$2^2\times 5^1\times 7^5\times {\mathrm{257}}^1$

素因数の和:301

約数の個数: 72

約数和(自身を含む): 212472288

約数和(自身を除く): 126084308

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 257, 343, 490, 514, 686, 980, 1028, 1285, 1372, 1715, 1799, 2401, 2570, 3430, 3598, 4802, 5140, 6860, 7196, 8995, 9604, 12005, 12593, 16807, 17990, 24010, 25186, 33614, 35980, 48020, 50372, 62965, 67228, 84035, 88151, 125930, 168070, 176302, 251860, 336140, 352604, 440755, 617057, 881510, 1234114, 1763020, 2468228, 3085285, 4319399, 6170570, 8638798, 12341140, 17277596, 21596995, 43193990, 86387980]

約数ペア:

[(1, 86387980), (2, 43193990), (4, 21596995), (5, 17277596), (7, 12341140), (10, 8638798), (14, 6170570), (20, 4319399), (28, 3085285), (35, 2468228), (49, 1763020), (70, 1234114), (98, 881510), (140, 617057), (196, 440755), (245, 352604), (257, 336140), (343, 251860), (490, 176302), (514, 168070), (686, 125930), (980, 88151), (1028, 84035), (1285, 67228), (1372, 62965), (1715, 50372), (1799, 48020), (2401, 35980), (2570, 33614), (3430, 25186), (3598, 24010), (4802, 17990), (5140, 16807), (6860, 12593), (7196, 12005), (8995, 9604)]