209528067

素因数分解:

$3^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{1531}}^1$

素因数の和:1581

約数の個数: 40

約数和(自身を含む): 343290560

約数和(自身を除く): 133762493

約数列:

[1, 3, 7, 19, 21, 49, 57, 133, 147, 343, 399, 931, 1029, 1531, 2401, 2793, 4593, 6517, 7203, 10717, 19551, 29089, 32151, 45619, 75019, 87267, 136857, 203623, 225057, 525133, 610869, 1425361, 1575399, 3675931, 4276083, 9977527, 11027793, 29932581, 69842689, 209528067]

約数ペア:

[(1, 209528067), (3, 69842689), (7, 29932581), (19, 11027793), (21, 9977527), (49, 4276083), (57, 3675931), (133, 1575399), (147, 1425361), (343, 610869), (399, 525133), (931, 225057), (1029, 203623), (1531, 136857), (2401, 87267), (2793, 75019), (4593, 45619), (6517, 32151), (7203, 29089), (10717, 19551)]