20190220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{1381}}^1$

素因数の和:1450

約数の個数: 48

約数和(自身を含む): 45970848

約数和(自身を除く): 25780628

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 170, 172, 215, 340, 430, 731, 860, 1381, 1462, 2762, 2924, 3655, 5524, 6905, 7310, 13810, 14620, 23477, 27620, 46954, 59383, 93908, 117385, 118766, 234770, 237532, 296915, 469540, 593830, 1009511, 1187660, 2019022, 4038044, 5047555, 10095110, 20190220]

約数ペア:

[(1, 20190220), (2, 10095110), (4, 5047555), (5, 4038044), (10, 2019022), (17, 1187660), (20, 1009511), (34, 593830), (43, 469540), (68, 296915), (85, 237532), (86, 234770), (170, 118766), (172, 117385), (215, 93908), (340, 59383), (430, 46954), (731, 27620), (860, 23477), (1381, 14620), (1462, 13810), (2762, 7310), (2924, 6905), (3655, 5524)]