21896980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{229}}^1\times {\mathrm{683}}^1$

素因数の和:928

約数の個数: 48

約数和(自身を含む): 52859520

約数和(自身を除く): 30962540

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 229, 458, 683, 916, 1145, 1366, 1603, 2290, 2732, 3206, 3415, 4580, 4781, 6412, 6830, 8015, 9562, 13660, 16030, 19124, 23905, 32060, 47810, 95620, 156407, 312814, 625628, 782035, 1094849, 1564070, 2189698, 3128140, 4379396, 5474245, 10948490, 21896980]

約数ペア:

[(1, 21896980), (2, 10948490), (4, 5474245), (5, 4379396), (7, 3128140), (10, 2189698), (14, 1564070), (20, 1094849), (28, 782035), (35, 625628), (70, 312814), (140, 156407), (229, 95620), (458, 47810), (683, 32060), (916, 23905), (1145, 19124), (1366, 16030), (1603, 13660), (2290, 9562), (2732, 8015), (3206, 6830), (3415, 6412), (4580, 4781)]