21036895

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{491}}^1$

素因数の和:567

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 8719265

約数列:

[1, 5, 11, 19, 41, 55, 95, 205, 209, 451, 491, 779, 1045, 2255, 2455, 3895, 5401, 8569, 9329, 20131, 27005, 42845, 46645, 100655, 102619, 221441, 382489, 513095, 1107205, 1912445, 4207379, 21036895]

約数ペア:

[(1, 21036895), (5, 4207379), (11, 1912445), (19, 1107205), (41, 513095), (55, 382489), (95, 221441), (205, 102619), (209, 100655), (451, 46645), (491, 42845), (779, 27005), (1045, 20131), (2255, 9329), (2455, 8569), (3895, 5401)]