81255678

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1\times {\mathrm{211}}^1$

素因数の和:449

約数の個数: 64

約数和(自身を含む): 191227392

約数和(自身を除く): 109971714

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 53, 106, 159, 173, 211, 318, 346, 371, 422, 519, 633, 742, 1038, 1113, 1211, 1266, 1477, 2226, 2422, 2954, 3633, 4431, 7266, 8862, 9169, 11183, 18338, 22366, 27507, 33549, 36503, 55014, 64183, 67098, 73006, 78281, 109509, 128366, 156562, 192549, 219018, 234843, 255521, 385098, 469686, 511042, 766563, 1533126, 1934659, 3869318, 5803977, 11607954, 13542613, 27085226, 40627839, 81255678]

約数ペア:

[(1, 81255678), (2, 40627839), (3, 27085226), (6, 13542613), (7, 11607954), (14, 5803977), (21, 3869318), (42, 1934659), (53, 1533126), (106, 766563), (159, 511042), (173, 469686), (211, 385098), (318, 255521), (346, 234843), (371, 219018), (422, 192549), (519, 156562), (633, 128366), (742, 109509), (1038, 78281), (1113, 73006), (1211, 67098), (1266, 64183), (1477, 55014), (2226, 36503), (2422, 33549), (2954, 27507), (3633, 22366), (4431, 18338), (7266, 11183), (8862, 9169)]