21711704

素因数分解:

$2^3\times 7^2\times {\mathrm{97}}^1\times {\mathrm{571}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 47927880

約数和(自身を除く): 26216176

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 97, 98, 194, 196, 388, 392, 571, 679, 776, 1142, 1358, 2284, 2716, 3997, 4568, 4753, 5432, 7994, 9506, 15988, 19012, 27979, 31976, 38024, 55387, 55958, 110774, 111916, 221548, 223832, 387709, 443096, 775418, 1550836, 2713963, 3101672, 5427926, 10855852, 21711704]

約数ペア:

[(1, 21711704), (2, 10855852), (4, 5427926), (7, 3101672), (8, 2713963), (14, 1550836), (28, 775418), (49, 443096), (56, 387709), (97, 223832), (98, 221548), (194, 111916), (196, 110774), (388, 55958), (392, 55387), (571, 38024), (679, 31976), (776, 27979), (1142, 19012), (1358, 15988), (2284, 9506), (2716, 7994), (3997, 5432), (4568, 4753)]