21462721

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{83}}^1$

素因数の和:201

約数の個数: 32

約数和(自身を含む): 27433728

約数和(自身を除く): 5971007

約数列:

[1, 7, 17, 41, 53, 83, 119, 287, 371, 581, 697, 901, 1411, 2173, 3403, 4399, 4879, 6307, 9877, 15211, 23821, 30793, 36941, 57851, 74783, 180359, 258587, 404957, 523481, 1262513, 3066103, 21462721]

約数ペア:

[(1, 21462721), (7, 3066103), (17, 1262513), (41, 523481), (53, 404957), (83, 258587), (119, 180359), (287, 74783), (371, 57851), (581, 36941), (697, 30793), (901, 23821), (1411, 15211), (2173, 9877), (3403, 6307), (4399, 4879)]