20611850

素因数分解:

$2^1\times 5^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{179}}^1$

素因数の和:252

約数の個数: 72

約数和(自身を含む): 45800640

約数和(自身を除く): 25188790

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 47, 49, 50, 70, 94, 98, 175, 179, 235, 245, 329, 350, 358, 470, 490, 658, 895, 1175, 1225, 1253, 1645, 1790, 2303, 2350, 2450, 2506, 3290, 4475, 4606, 6265, 8225, 8413, 8771, 8950, 11515, 12530, 16450, 16826, 17542, 23030, 31325, 42065, 43855, 57575, 58891, 62650, 84130, 87710, 115150, 117782, 210325, 219275, 294455, 412237, 420650, 438550, 588910, 824474, 1472275, 2061185, 2944550, 4122370, 10305925, 20611850]

約数ペア:

[(1, 20611850), (2, 10305925), (5, 4122370), (7, 2944550), (10, 2061185), (14, 1472275), (25, 824474), (35, 588910), (47, 438550), (49, 420650), (50, 412237), (70, 294455), (94, 219275), (98, 210325), (175, 117782), (179, 115150), (235, 87710), (245, 84130), (329, 62650), (350, 58891), (358, 57575), (470, 43855), (490, 42065), (658, 31325), (895, 23030), (1175, 17542), (1225, 16826), (1253, 16450), (1645, 12530), (1790, 11515), (2303, 8950), (2350, 8771), (2450, 8413), (2506, 8225), (3290, 6265), (4475, 4606)]