21454245

素因数分解:

$3^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{971}}^1$

素因数の和:1473

約数の個数: 24

約数和(自身を含む): 37301472

約数和(自身を除く): 15847227

約数列:

[1, 3, 5, 9, 15, 45, 491, 971, 1473, 2455, 2913, 4419, 4855, 7365, 8739, 14565, 22095, 43695, 476761, 1430283, 2383805, 4290849, 7151415, 21454245]

約数ペア:

[(1, 21454245), (3, 7151415), (5, 4290849), (9, 2383805), (15, 1430283), (45, 476761), (491, 43695), (971, 22095), (1473, 14565), (2455, 8739), (2913, 7365), (4419, 4855)]