21586890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{55351}}^1$

素因数の和:55374

約数の個数: 32

約数和(自身を含む): 55794816

約数和(自身を除く): 34207926

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 55351, 110702, 166053, 276755, 332106, 553510, 719563, 830265, 1439126, 1660530, 2158689, 3597815, 4317378, 7195630, 10793445, 21586890]

約数ペア:

[(1, 21586890), (2, 10793445), (3, 7195630), (5, 4317378), (6, 3597815), (10, 2158689), (13, 1660530), (15, 1439126), (26, 830265), (30, 719563), (39, 553510), (65, 332106), (78, 276755), (130, 166053), (195, 110702), (390, 55351)]