12465880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{211}}^2$

素因数の和:440

約数の個数: 48

約数和(自身を含む): 32207760

約数和(自身を除く): 19741880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 211, 280, 422, 844, 1055, 1477, 1688, 2110, 2954, 4220, 5908, 7385, 8440, 11816, 14770, 29540, 44521, 59080, 89042, 178084, 222605, 311647, 356168, 445210, 623294, 890420, 1246588, 1558235, 1780840, 2493176, 3116470, 6232940, 12465880]

約数ペア:

[(1, 12465880), (2, 6232940), (4, 3116470), (5, 2493176), (7, 1780840), (8, 1558235), (10, 1246588), (14, 890420), (20, 623294), (28, 445210), (35, 356168), (40, 311647), (56, 222605), (70, 178084), (140, 89042), (211, 59080), (280, 44521), (422, 29540), (844, 14770), (1055, 11816), (1477, 8440), (1688, 7385), (2110, 5908), (2954, 4220)]