19141880

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{359}}^1$

素因数の和:444

約数の個数: 64

約数和(自身を含む): 45619200

約数和(自身を除く): 26477320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 359, 430, 620, 718, 860, 1240, 1333, 1436, 1720, 1795, 2666, 2872, 3590, 5332, 6665, 7180, 10664, 11129, 13330, 14360, 15437, 22258, 26660, 30874, 44516, 53320, 55645, 61748, 77185, 89032, 111290, 123496, 154370, 222580, 308740, 445160, 478547, 617480, 957094, 1914188, 2392735, 3828376, 4785470, 9570940, 19141880]

約数ペア:

[(1, 19141880), (2, 9570940), (4, 4785470), (5, 3828376), (8, 2392735), (10, 1914188), (20, 957094), (31, 617480), (40, 478547), (43, 445160), (62, 308740), (86, 222580), (124, 154370), (155, 123496), (172, 111290), (215, 89032), (248, 77185), (310, 61748), (344, 55645), (359, 53320), (430, 44516), (620, 30874), (718, 26660), (860, 22258), (1240, 15437), (1333, 14360), (1436, 13330), (1720, 11129), (1795, 10664), (2666, 7180), (2872, 6665), (3590, 5332)]