18869864

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{821}}^1$

素因数の和:870

約数の個数: 48

約数和(自身を含む): 40615020

約数和(自身を除く): 21745156

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 169, 221, 338, 442, 676, 821, 884, 1352, 1642, 1768, 2873, 3284, 5746, 6568, 10673, 11492, 13957, 21346, 22984, 27914, 42692, 55828, 85384, 111656, 138749, 181441, 277498, 362882, 554996, 725764, 1109992, 1451528, 2358733, 4717466, 9434932, 18869864]

約数ペア:

[(1, 18869864), (2, 9434932), (4, 4717466), (8, 2358733), (13, 1451528), (17, 1109992), (26, 725764), (34, 554996), (52, 362882), (68, 277498), (104, 181441), (136, 138749), (169, 111656), (221, 85384), (338, 55828), (442, 42692), (676, 27914), (821, 22984), (884, 21346), (1352, 13957), (1642, 11492), (1768, 10673), (2873, 6568), (3284, 5746)]