21388890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{2467}}^1$

素因数の和:2511

約数の個数: 48

約数和(自身を含む): 54552672

約数和(自身を除く): 33163782

約数列:

[1, 2, 3, 5, 6, 10, 15, 17, 30, 34, 51, 85, 102, 170, 255, 289, 510, 578, 867, 1445, 1734, 2467, 2890, 4335, 4934, 7401, 8670, 12335, 14802, 24670, 37005, 41939, 74010, 83878, 125817, 209695, 251634, 419390, 629085, 712963, 1258170, 1425926, 2138889, 3564815, 4277778, 7129630, 10694445, 21388890]

約数ペア:

[(1, 21388890), (2, 10694445), (3, 7129630), (5, 4277778), (6, 3564815), (10, 2138889), (15, 1425926), (17, 1258170), (30, 712963), (34, 629085), (51, 419390), (85, 251634), (102, 209695), (170, 125817), (255, 83878), (289, 74010), (510, 41939), (578, 37005), (867, 24670), (1445, 14802), (1734, 12335), (2467, 8670), (2890, 7401), (4335, 4934)]