25490420

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{619}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 56246400

約数和(自身を除く): 30755980

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 580, 619, 710, 1238, 1420, 2059, 2476, 3095, 4118, 6190, 8236, 10295, 12380, 17951, 20590, 35902, 41180, 43949, 71804, 87898, 89755, 175796, 179510, 219745, 359020, 439490, 878980, 1274521, 2549042, 5098084, 6372605, 12745210, 25490420]

約数ペア:

[(1, 25490420), (2, 12745210), (4, 6372605), (5, 5098084), (10, 2549042), (20, 1274521), (29, 878980), (58, 439490), (71, 359020), (116, 219745), (142, 179510), (145, 175796), (284, 89755), (290, 87898), (355, 71804), (580, 43949), (619, 41180), (710, 35902), (1238, 20590), (1420, 17951), (2059, 12380), (2476, 10295), (3095, 8236), (4118, 6190)]