639728896

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{80611}}^1$

素因数の和:80658

約数の個数: 36

約数和(自身を含む): 1318167424

約数和(自身を除く): 678438528

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 3968, 7936, 80611, 161222, 322444, 644888, 1289776, 2498941, 2579552, 4997882, 5159104, 9995764, 10318208, 19991528, 20636416, 39983056, 79966112, 159932224, 319864448, 639728896]

約数ペア:

[(1, 639728896), (2, 319864448), (4, 159932224), (8, 79966112), (16, 39983056), (31, 20636416), (32, 19991528), (62, 10318208), (64, 9995764), (124, 5159104), (128, 4997882), (248, 2579552), (256, 2498941), (496, 1289776), (992, 644888), (1984, 322444), (3968, 161222), (7936, 80611)]