18516428

素因数分解:

$2^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{293}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 38789184

約数和(自身を除く): 20272756

約数列:

[1, 2, 4, 7, 14, 28, 37, 61, 74, 122, 148, 244, 259, 293, 427, 518, 586, 854, 1036, 1172, 1708, 2051, 2257, 4102, 4514, 8204, 9028, 10841, 15799, 17873, 21682, 31598, 35746, 43364, 63196, 71492, 75887, 125111, 151774, 250222, 303548, 500444, 661301, 1322602, 2645204, 4629107, 9258214, 18516428]

約数ペア:

[(1, 18516428), (2, 9258214), (4, 4629107), (7, 2645204), (14, 1322602), (28, 661301), (37, 500444), (61, 303548), (74, 250222), (122, 151774), (148, 125111), (244, 75887), (259, 71492), (293, 63196), (427, 43364), (518, 35746), (586, 31598), (854, 21682), (1036, 17873), (1172, 15799), (1708, 10841), (2051, 9028), (2257, 8204), (4102, 4514)]