20866160

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{5323}}^1$

素因数の和:5350

約数の個数: 60

約数和(自身を含む): 56445048

約数和(自身を除く): 35578888

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 5323, 10646, 21292, 26615, 37261, 42584, 53230, 74522, 85168, 106460, 149044, 186305, 212920, 260827, 298088, 372610, 425840, 521654, 596176, 745220, 1043308, 1304135, 1490440, 2086616, 2608270, 2980880, 4173232, 5216540, 10433080, 20866160]

約数ペア:

[(1, 20866160), (2, 10433080), (4, 5216540), (5, 4173232), (7, 2980880), (8, 2608270), (10, 2086616), (14, 1490440), (16, 1304135), (20, 1043308), (28, 745220), (35, 596176), (40, 521654), (49, 425840), (56, 372610), (70, 298088), (80, 260827), (98, 212920), (112, 186305), (140, 149044), (196, 106460), (245, 85168), (280, 74522), (392, 53230), (490, 42584), (560, 37261), (784, 26615), (980, 21292), (1960, 10646), (3920, 5323)]