20581407

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1747}}^1$

素因数の和:1788

約数の個数: 48

約数和(自身を含む): 39267072

約数和(自身を除く): 18685665

約数列:

[1, 3, 7, 9, 11, 17, 21, 33, 51, 63, 77, 99, 119, 153, 187, 231, 357, 561, 693, 1071, 1309, 1683, 1747, 3927, 5241, 11781, 12229, 15723, 19217, 29699, 36687, 57651, 89097, 110061, 134519, 172953, 207893, 267291, 326689, 403557, 623679, 980067, 1210671, 1871037, 2286823, 2940201, 6860469, 20581407]

約数ペア:

[(1, 20581407), (3, 6860469), (7, 2940201), (9, 2286823), (11, 1871037), (17, 1210671), (21, 980067), (33, 623679), (51, 403557), (63, 326689), (77, 267291), (99, 207893), (119, 172953), (153, 134519), (187, 110061), (231, 89097), (357, 57651), (561, 36687), (693, 29699), (1071, 19217), (1309, 15723), (1683, 12229), (1747, 11781), (3927, 5241)]