20132678980

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{2213}}^1\times {\mathrm{2309}}^1$

素因数の和:4728

約数の個数: 48

約数和(自身を含む): 42530851440

約数和(自身を除く): 22398172460

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 2213, 2309, 3940, 4426, 4618, 8852, 9236, 11065, 11545, 22130, 23090, 44260, 46180, 435961, 454873, 871922, 909746, 1743844, 1819492, 2179805, 2274365, 4359610, 4548730, 5109817, 8719220, 9097460, 10219634, 20439268, 25549085, 51098170, 102196340, 1006633949, 2013267898, 4026535796, 5033169745, 10066339490, 20132678980]

約数ペア:

[(1, 20132678980), (2, 10066339490), (4, 5033169745), (5, 4026535796), (10, 2013267898), (20, 1006633949), (197, 102196340), (394, 51098170), (788, 25549085), (985, 20439268), (1970, 10219634), (2213, 9097460), (2309, 8719220), (3940, 5109817), (4426, 4548730), (4618, 4359610), (8852, 2274365), (9236, 2179805), (11065, 1819492), (11545, 1743844), (22130, 909746), (23090, 871922), (44260, 454873), (46180, 435961)]