31389939

素因数分解:

$3^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{79}}^1$

素因数の和:169

約数の個数: 72

約数和(自身を含む): 57620160

約数和(自身を除く): 26230221

約数列:

[1, 3, 7, 9, 17, 21, 49, 51, 53, 63, 79, 119, 147, 153, 159, 237, 357, 371, 441, 477, 553, 711, 833, 901, 1071, 1113, 1343, 1659, 2499, 2597, 2703, 3339, 3871, 4029, 4187, 4977, 6307, 7497, 7791, 8109, 9401, 11613, 12087, 12561, 18921, 23373, 28203, 29309, 34839, 37683, 44149, 56763, 65807, 71179, 84609, 87927, 132447, 197421, 205163, 213537, 263781, 397341, 498253, 592263, 615489, 640611, 1494759, 1846467, 3487771, 4484277, 10463313, 31389939]

約数ペア:

[(1, 31389939), (3, 10463313), (7, 4484277), (9, 3487771), (17, 1846467), (21, 1494759), (49, 640611), (51, 615489), (53, 592263), (63, 498253), (79, 397341), (119, 263781), (147, 213537), (153, 205163), (159, 197421), (237, 132447), (357, 87927), (371, 84609), (441, 71179), (477, 65807), (553, 56763), (711, 44149), (833, 37683), (901, 34839), (1071, 29309), (1113, 28203), (1343, 23373), (1659, 18921), (2499, 12561), (2597, 12087), (2703, 11613), (3339, 9401), (3871, 8109), (4029, 7791), (4187, 7497), (4977, 6307)]