78664040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{21611}}^1$

素因数の和:21642

約数の個数: 64

約数和(自身を含む): 217848960

約数和(自身を除く): 139184920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 21611, 43222, 86444, 108055, 151277, 172888, 216110, 280943, 302554, 432220, 561886, 605108, 756385, 864440, 1123772, 1210216, 1404715, 1512770, 1966601, 2247544, 2809430, 3025540, 3933202, 5618860, 6051080, 7866404, 9833005, 11237720, 15732808, 19666010, 39332020, 78664040]

約数ペア:

[(1, 78664040), (2, 39332020), (4, 19666010), (5, 15732808), (7, 11237720), (8, 9833005), (10, 7866404), (13, 6051080), (14, 5618860), (20, 3933202), (26, 3025540), (28, 2809430), (35, 2247544), (40, 1966601), (52, 1512770), (56, 1404715), (65, 1210216), (70, 1123772), (91, 864440), (104, 756385), (130, 605108), (140, 561886), (182, 432220), (260, 302554), (280, 280943), (364, 216110), (455, 172888), (520, 151277), (728, 108055), (910, 86444), (1820, 43222), (3640, 21611)]