17771740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2081}}^1$

素因数の和:2158

約数の個数: 48

約数和(自身を含む): 43372224

約数和(自身を除く): 25600484

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 61, 70, 122, 140, 244, 305, 427, 610, 854, 1220, 1708, 2081, 2135, 4162, 4270, 8324, 8540, 10405, 14567, 20810, 29134, 41620, 58268, 72835, 126941, 145670, 253882, 291340, 507764, 634705, 888587, 1269410, 1777174, 2538820, 3554348, 4442935, 8885870, 17771740]

約数ペア:

[(1, 17771740), (2, 8885870), (4, 4442935), (5, 3554348), (7, 2538820), (10, 1777174), (14, 1269410), (20, 888587), (28, 634705), (35, 507764), (61, 291340), (70, 253882), (122, 145670), (140, 126941), (244, 72835), (305, 58268), (427, 41620), (610, 29134), (854, 20810), (1220, 14567), (1708, 10405), (2081, 8540), (2135, 8324), (4162, 4270)]