21190970

素因数分解:

$2^1\times 5^1\times {\mathrm{541}}^1\times {\mathrm{3917}}^1$

素因数の和:4465

約数の個数: 16

約数和(自身を含む): 38224008

約数和(自身を除く): 17033038

約数列:

[1, 2, 5, 10, 541, 1082, 2705, 3917, 5410, 7834, 19585, 39170, 2119097, 4238194, 10595485, 21190970]

約数ペア:

[(1, 21190970), (2, 10595485), (5, 4238194), (10, 2119097), (541, 39170), (1082, 19585), (2705, 7834), (3917, 5410)]