28640690

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:227

約数の個数: 64

約数和(自身を含む): 58786560

約数和(自身を除く): 30145870

約数列:

[1, 2, 5, 10, 13, 26, 29, 58, 65, 71, 107, 130, 142, 145, 214, 290, 355, 377, 535, 710, 754, 923, 1070, 1391, 1846, 1885, 2059, 2782, 3103, 3770, 4118, 4615, 6206, 6955, 7597, 9230, 10295, 13910, 15194, 15515, 20590, 26767, 31030, 37985, 40339, 53534, 75970, 80678, 98761, 133835, 197522, 201695, 220313, 267670, 403390, 440626, 493805, 987610, 1101565, 2203130, 2864069, 5728138, 14320345, 28640690]

約数ペア:

[(1, 28640690), (2, 14320345), (5, 5728138), (10, 2864069), (13, 2203130), (26, 1101565), (29, 987610), (58, 493805), (65, 440626), (71, 403390), (107, 267670), (130, 220313), (142, 201695), (145, 197522), (214, 133835), (290, 98761), (355, 80678), (377, 75970), (535, 53534), (710, 40339), (754, 37985), (923, 31030), (1070, 26767), (1391, 20590), (1846, 15515), (1885, 15194), (2059, 13910), (2782, 10295), (3103, 9230), (3770, 7597), (4118, 6955), (4615, 6206)]