21130660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{3271}}^1$

素因数の和:3316

約数の個数: 48

約数和(自身を含む): 49472640

約数和(自身を除く): 28341980

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 323, 340, 380, 646, 1292, 1615, 3230, 3271, 6460, 6542, 13084, 16355, 32710, 55607, 62149, 65420, 111214, 124298, 222428, 248596, 278035, 310745, 556070, 621490, 1056533, 1112140, 1242980, 2113066, 4226132, 5282665, 10565330, 21130660]

約数ペア:

[(1, 21130660), (2, 10565330), (4, 5282665), (5, 4226132), (10, 2113066), (17, 1242980), (19, 1112140), (20, 1056533), (34, 621490), (38, 556070), (68, 310745), (76, 278035), (85, 248596), (95, 222428), (170, 124298), (190, 111214), (323, 65420), (340, 62149), (380, 55607), (646, 32710), (1292, 16355), (1615, 13084), (3230, 6542), (3271, 6460)]