21157472

素因数分解:

$2^5\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3257}}^1$

素因数の和:3303

約数の個数: 48

約数和(自身を含む): 49260960

約数和(自身を除く): 28103488

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 32, 56, 58, 112, 116, 203, 224, 232, 406, 464, 812, 928, 1624, 3248, 3257, 6496, 6514, 13028, 22799, 26056, 45598, 52112, 91196, 94453, 104224, 182392, 188906, 364784, 377812, 661171, 729568, 755624, 1322342, 1511248, 2644684, 3022496, 5289368, 10578736, 21157472]

約数ペア:

[(1, 21157472), (2, 10578736), (4, 5289368), (7, 3022496), (8, 2644684), (14, 1511248), (16, 1322342), (28, 755624), (29, 729568), (32, 661171), (56, 377812), (58, 364784), (112, 188906), (116, 182392), (203, 104224), (224, 94453), (232, 91196), (406, 52112), (464, 45598), (812, 26056), (928, 22799), (1624, 13028), (3248, 6514), (3257, 6496)]