1230980

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1009}}^1$

素因数の和:1079

約数の個数: 24

約数和(自身を含む): 2630040

約数和(自身を除く): 1399060

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1009, 1220, 2018, 4036, 5045, 10090, 20180, 61549, 123098, 246196, 307745, 615490, 1230980]

約数ペア:

[(1, 1230980), (2, 615490), (4, 307745), (5, 246196), (10, 123098), (20, 61549), (61, 20180), (122, 10090), (244, 5045), (305, 4036), (610, 2018), (1009, 1220)]