21768040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{77743}}^1$

素因数の和:77761

約数の個数: 32

約数和(自身を含む): 55975680

約数和(自身を除く): 34207640

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 77743, 155486, 310972, 388715, 544201, 621944, 777430, 1088402, 1554860, 2176804, 2721005, 3109720, 4353608, 5442010, 10884020, 21768040]

約数ペア:

[(1, 21768040), (2, 10884020), (4, 5442010), (5, 4353608), (7, 3109720), (8, 2721005), (10, 2176804), (14, 1554860), (20, 1088402), (28, 777430), (35, 621944), (40, 544201), (56, 388715), (70, 310972), (140, 155486), (280, 77743)]