21060693740

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{251501}}^1$

素因数の和:251642

約数の個数: 48

約数和(自身を含む): 45632522880

約数和(自身を除く): 24571829140

約数列:

[1, 2, 4, 5, 10, 20, 53, 79, 106, 158, 212, 265, 316, 395, 530, 790, 1060, 1580, 4187, 8374, 16748, 20935, 41870, 83740, 251501, 503002, 1006004, 1257505, 2515010, 5030020, 13329553, 19868579, 26659106, 39737158, 53318212, 66647765, 79474316, 99342895, 133295530, 198685790, 266591060, 397371580, 1053034687, 2106069374, 4212138748, 5265173435, 10530346870, 21060693740]

約数ペア:

[(1, 21060693740), (2, 10530346870), (4, 5265173435), (5, 4212138748), (10, 2106069374), (20, 1053034687), (53, 397371580), (79, 266591060), (106, 198685790), (158, 133295530), (212, 99342895), (265, 79474316), (316, 66647765), (395, 53318212), (530, 39737158), (790, 26659106), (1060, 19868579), (1580, 13329553), (4187, 5030020), (8374, 2515010), (16748, 1257505), (20935, 1006004), (41870, 503002), (83740, 251501)]