261121370

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1031}}^1$

素因数の和:1131

約数の個数: 64

約数和(自身を含む): 523100160

約数和(自身を除く): 261978790

約数列:

[1, 2, 5, 10, 19, 31, 38, 43, 62, 86, 95, 155, 190, 215, 310, 430, 589, 817, 1031, 1178, 1333, 1634, 2062, 2666, 2945, 4085, 5155, 5890, 6665, 8170, 10310, 13330, 19589, 25327, 31961, 39178, 44333, 50654, 63922, 88666, 97945, 126635, 159805, 195890, 221665, 253270, 319610, 443330, 607259, 842327, 1214518, 1374323, 1684654, 2748646, 3036295, 4211635, 6072590, 6871615, 8423270, 13743230, 26112137, 52224274, 130560685, 261121370]

約数ペア:

[(1, 261121370), (2, 130560685), (5, 52224274), (10, 26112137), (19, 13743230), (31, 8423270), (38, 6871615), (43, 6072590), (62, 4211635), (86, 3036295), (95, 2748646), (155, 1684654), (190, 1374323), (215, 1214518), (310, 842327), (430, 607259), (589, 443330), (817, 319610), (1031, 253270), (1178, 221665), (1333, 195890), (1634, 159805), (2062, 126635), (2666, 97945), (2945, 88666), (4085, 63922), (5155, 50654), (5890, 44333), (6665, 39178), (8170, 31961), (10310, 25327), (13330, 19589)]