19863808

素因数分解:

$2^8\times {\mathrm{31}}^1\times {\mathrm{2503}}^1$

素因数の和:2550

約数の個数: 36

約数和(自身を含む): 40945408

約数和(自身を除く): 21081600

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 248, 256, 496, 992, 1984, 2503, 3968, 5006, 7936, 10012, 20024, 40048, 77593, 80096, 155186, 160192, 310372, 320384, 620744, 640768, 1241488, 2482976, 4965952, 9931904, 19863808]

約数ペア:

[(1, 19863808), (2, 9931904), (4, 4965952), (8, 2482976), (16, 1241488), (31, 640768), (32, 620744), (62, 320384), (64, 310372), (124, 160192), (128, 155186), (248, 80096), (256, 77593), (496, 40048), (992, 20024), (1984, 10012), (2503, 7936), (3968, 5006)]