128915388

素因数分解:

$2^2\times 3^5\times 7^1\times {\mathrm{18947}}^1$

素因数の和:18973

約数の個数: 72

約数和(自身を含む): 386236032

約数和(自身を除く): 257320644

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 81, 84, 108, 126, 162, 189, 243, 252, 324, 378, 486, 567, 756, 972, 1134, 1701, 2268, 3402, 6804, 18947, 37894, 56841, 75788, 113682, 132629, 170523, 227364, 265258, 341046, 397887, 511569, 530516, 682092, 795774, 1023138, 1193661, 1534707, 1591548, 2046276, 2387322, 3069414, 3580983, 4604121, 4774644, 6138828, 7161966, 9208242, 10742949, 14323932, 18416484, 21485898, 32228847, 42971796, 64457694, 128915388]

約数ペア:

[(1, 128915388), (2, 64457694), (3, 42971796), (4, 32228847), (6, 21485898), (7, 18416484), (9, 14323932), (12, 10742949), (14, 9208242), (18, 7161966), (21, 6138828), (27, 4774644), (28, 4604121), (36, 3580983), (42, 3069414), (54, 2387322), (63, 2046276), (81, 1591548), (84, 1534707), (108, 1193661), (126, 1023138), (162, 795774), (189, 682092), (243, 530516), (252, 511569), (324, 397887), (378, 341046), (486, 265258), (567, 227364), (756, 170523), (972, 132629), (1134, 113682), (1701, 75788), (2268, 56841), (3402, 37894), (6804, 18947)]