499528380

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{640421}}^1$

素因数の和:640446

約数の個数: 48

約数和(自身を含む): 1506272544

約数和(自身を除く): 1006744164

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 640421, 1280842, 1921263, 2561684, 3202105, 3842526, 6404210, 7685052, 8325473, 9606315, 12808420, 16650946, 19212630, 24976419, 33301892, 38425260, 41627365, 49952838, 83254730, 99905676, 124882095, 166509460, 249764190, 499528380]

約数ペア:

[(1, 499528380), (2, 249764190), (3, 166509460), (4, 124882095), (5, 99905676), (6, 83254730), (10, 49952838), (12, 41627365), (13, 38425260), (15, 33301892), (20, 24976419), (26, 19212630), (30, 16650946), (39, 12808420), (52, 9606315), (60, 8325473), (65, 7685052), (78, 6404210), (130, 3842526), (156, 3202105), (195, 2561684), (260, 1921263), (390, 1280842), (780, 640421)]