17950005

素因数分解:

$3^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1$

素因数の和:128

約数の個数: 80

約数和(自身を含む): 35126784

約数和(自身を除く): 17176779

約数列:

[1, 3, 5, 9, 15, 23, 27, 41, 45, 47, 69, 81, 115, 123, 135, 141, 205, 207, 235, 345, 369, 405, 423, 615, 621, 705, 943, 1035, 1081, 1107, 1269, 1845, 1863, 1927, 2115, 2829, 3105, 3243, 3321, 3807, 4715, 5405, 5535, 5781, 6345, 8487, 9315, 9635, 9729, 14145, 16215, 16605, 17343, 19035, 25461, 28905, 29187, 42435, 44321, 48645, 52029, 76383, 86715, 87561, 127305, 132963, 145935, 156087, 221605, 260145, 381915, 398889, 437805, 664815, 780435, 1196667, 1994445, 3590001, 5983335, 17950005]

約数ペア:

[(1, 17950005), (3, 5983335), (5, 3590001), (9, 1994445), (15, 1196667), (23, 780435), (27, 664815), (41, 437805), (45, 398889), (47, 381915), (69, 260145), (81, 221605), (115, 156087), (123, 145935), (135, 132963), (141, 127305), (205, 87561), (207, 86715), (235, 76383), (345, 52029), (369, 48645), (405, 44321), (423, 42435), (615, 29187), (621, 28905), (705, 25461), (943, 19035), (1035, 17343), (1081, 16605), (1107, 16215), (1269, 14145), (1845, 9729), (1863, 9635), (1927, 9315), (2115, 8487), (2829, 6345), (3105, 5781), (3243, 5535), (3321, 5405), (3807, 4715)]