19759180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1249}}^1$

素因数の和:1378

約数の個数: 48

約数和(自身を含む): 47880000

約数和(自身を除く): 28120820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 113, 140, 226, 452, 565, 791, 1130, 1249, 1582, 2260, 2498, 3164, 3955, 4996, 6245, 7910, 8743, 12490, 15820, 17486, 24980, 34972, 43715, 87430, 141137, 174860, 282274, 564548, 705685, 987959, 1411370, 1975918, 2822740, 3951836, 4939795, 9879590, 19759180]

約数ペア:

[(1, 19759180), (2, 9879590), (4, 4939795), (5, 3951836), (7, 2822740), (10, 1975918), (14, 1411370), (20, 987959), (28, 705685), (35, 564548), (70, 282274), (113, 174860), (140, 141137), (226, 87430), (452, 43715), (565, 34972), (791, 24980), (1130, 17486), (1249, 15820), (1582, 12490), (2260, 8743), (2498, 7910), (3164, 6245), (3955, 4996)]