21017490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53891}}^1$

素因数の和:53914

約数の個数: 32

約数和(自身を含む): 54323136

約数和(自身を除く): 33305646

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 53891, 107782, 161673, 269455, 323346, 538910, 700583, 808365, 1401166, 1616730, 2101749, 3502915, 4203498, 7005830, 10508745, 21017490]

約数ペア:

[(1, 21017490), (2, 10508745), (3, 7005830), (5, 4203498), (6, 3502915), (10, 2101749), (13, 1616730), (15, 1401166), (26, 808365), (30, 700583), (39, 538910), (65, 323346), (78, 269455), (130, 161673), (195, 107782), (390, 53891)]