18965336

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{631}}^1$

素因数の和:684

約数の個数: 48

約数和(自身を含む): 40745040

約数和(自身を除く): 21779704

約数列:

[1, 2, 4, 8, 13, 17, 26, 34, 52, 68, 104, 136, 221, 289, 442, 578, 631, 884, 1156, 1262, 1768, 2312, 2524, 3757, 5048, 7514, 8203, 10727, 15028, 16406, 21454, 30056, 32812, 42908, 65624, 85816, 139451, 182359, 278902, 364718, 557804, 729436, 1115608, 1458872, 2370667, 4741334, 9482668, 18965336]

約数ペア:

[(1, 18965336), (2, 9482668), (4, 4741334), (8, 2370667), (13, 1458872), (17, 1115608), (26, 729436), (34, 557804), (52, 364718), (68, 278902), (104, 182359), (136, 139451), (221, 85816), (289, 65624), (442, 42908), (578, 32812), (631, 30056), (884, 21454), (1156, 16406), (1262, 15028), (1768, 10727), (2312, 8203), (2524, 7514), (3757, 5048)]