261707890

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{677}}^1$

素因数の和:787

約数の個数: 64

約数和(自身を含む): 515496960

約数和(自身を除く): 253789070

約数列:

[1, 2, 5, 10, 29, 31, 43, 58, 62, 86, 145, 155, 215, 290, 310, 430, 677, 899, 1247, 1333, 1354, 1798, 2494, 2666, 3385, 4495, 6235, 6665, 6770, 8990, 12470, 13330, 19633, 20987, 29111, 38657, 39266, 41974, 58222, 77314, 98165, 104935, 145555, 193285, 196330, 209870, 291110, 386570, 608623, 844219, 902441, 1217246, 1688438, 1804882, 3043115, 4221095, 4512205, 6086230, 8442190, 9024410, 26170789, 52341578, 130853945, 261707890]

約数ペア:

[(1, 261707890), (2, 130853945), (5, 52341578), (10, 26170789), (29, 9024410), (31, 8442190), (43, 6086230), (58, 4512205), (62, 4221095), (86, 3043115), (145, 1804882), (155, 1688438), (215, 1217246), (290, 902441), (310, 844219), (430, 608623), (677, 386570), (899, 291110), (1247, 209870), (1333, 196330), (1354, 193285), (1798, 145555), (2494, 104935), (2666, 98165), (3385, 77314), (4495, 58222), (6235, 41974), (6665, 39266), (6770, 38657), (8990, 29111), (12470, 20987), (13330, 19633)]