18077740

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{113}}^1\times {\mathrm{421}}^1$

素因数の和:562

約数の個数: 48

約数和(自身を含む): 40410720

約数和(自身を除く): 22332980

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 113, 190, 226, 380, 421, 452, 565, 842, 1130, 1684, 2105, 2147, 2260, 4210, 4294, 7999, 8420, 8588, 10735, 15998, 21470, 31996, 39995, 42940, 47573, 79990, 95146, 159980, 190292, 237865, 475730, 903887, 951460, 1807774, 3615548, 4519435, 9038870, 18077740]

約数ペア:

[(1, 18077740), (2, 9038870), (4, 4519435), (5, 3615548), (10, 1807774), (19, 951460), (20, 903887), (38, 475730), (76, 237865), (95, 190292), (113, 159980), (190, 95146), (226, 79990), (380, 47573), (421, 42940), (452, 39995), (565, 31996), (842, 21470), (1130, 15998), (1684, 10735), (2105, 8588), (2147, 8420), (2260, 7999), (4210, 4294)]