18174940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{991}}^1$

素因数の和:1138

約数の個数: 48

約数和(自身を含む): 43997184

約数和(自身を除く): 25822244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 991, 1310, 1834, 1982, 2620, 3668, 3964, 4585, 4955, 6937, 9170, 9910, 13874, 18340, 19820, 27748, 34685, 69370, 129821, 138740, 259642, 519284, 649105, 908747, 1298210, 1817494, 2596420, 3634988, 4543735, 9087470, 18174940]

約数ペア:

[(1, 18174940), (2, 9087470), (4, 4543735), (5, 3634988), (7, 2596420), (10, 1817494), (14, 1298210), (20, 908747), (28, 649105), (35, 519284), (70, 259642), (131, 138740), (140, 129821), (262, 69370), (524, 34685), (655, 27748), (917, 19820), (991, 18340), (1310, 13874), (1834, 9910), (1982, 9170), (2620, 6937), (3668, 4955), (3964, 4585)]