18781136

素因数分解:

$2^4\times {\mathrm{11}}^2\times {\mathrm{89}}^1\times {\mathrm{109}}^1$

素因数の和:228

約数の個数: 60

約数和(自身を含む): 40817700

約数和(自身を除く): 22036564

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 89, 109, 121, 176, 178, 218, 242, 356, 436, 484, 712, 872, 968, 979, 1199, 1424, 1744, 1936, 1958, 2398, 3916, 4796, 7832, 9592, 9701, 10769, 13189, 15664, 19184, 19402, 21538, 26378, 38804, 43076, 52756, 77608, 86152, 105512, 106711, 155216, 172304, 211024, 213422, 426844, 853688, 1173821, 1707376, 2347642, 4695284, 9390568, 18781136]

約数ペア:

[(1, 18781136), (2, 9390568), (4, 4695284), (8, 2347642), (11, 1707376), (16, 1173821), (22, 853688), (44, 426844), (88, 213422), (89, 211024), (109, 172304), (121, 155216), (176, 106711), (178, 105512), (218, 86152), (242, 77608), (356, 52756), (436, 43076), (484, 38804), (712, 26378), (872, 21538), (968, 19402), (979, 19184), (1199, 15664), (1424, 13189), (1744, 10769), (1936, 9701), (1958, 9592), (2398, 7832), (3916, 4796)]