18718275

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{277}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 33506784

約数和(自身を除く): 14788509

約数列:

[1, 3, 5, 15, 17, 25, 51, 53, 75, 85, 159, 255, 265, 277, 425, 795, 831, 901, 1275, 1325, 1385, 2703, 3975, 4155, 4505, 4709, 6925, 13515, 14127, 14681, 20775, 22525, 23545, 44043, 67575, 70635, 73405, 117725, 220215, 249577, 353175, 367025, 748731, 1101075, 1247885, 3743655, 6239425, 18718275]

約数ペア:

[(1, 18718275), (3, 6239425), (5, 3743655), (15, 1247885), (17, 1101075), (25, 748731), (51, 367025), (53, 353175), (75, 249577), (85, 220215), (159, 117725), (255, 73405), (265, 70635), (277, 67575), (425, 44043), (795, 23545), (831, 22525), (901, 20775), (1275, 14681), (1325, 14127), (1385, 13515), (2703, 6925), (3975, 4709), (4155, 4505)]