21157590

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{9661}}^1$

素因数の和:9744

約数の個数: 32

約数和(自身を含む): 51479136

約数和(自身を除く): 30321546

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 73, 146, 219, 365, 438, 730, 1095, 2190, 9661, 19322, 28983, 48305, 57966, 96610, 144915, 289830, 705253, 1410506, 2115759, 3526265, 4231518, 7052530, 10578795, 21157590]

約数ペア:

[(1, 21157590), (2, 10578795), (3, 7052530), (5, 4231518), (6, 3526265), (10, 2115759), (15, 1410506), (30, 705253), (73, 289830), (146, 144915), (219, 96610), (365, 57966), (438, 48305), (730, 28983), (1095, 19322), (2190, 9661)]