21488950

素因数分解:

$2^1\times 5^2\times 7^4\times {\mathrm{179}}^1$

素因数の和:219

約数の個数: 60

約数和(自身を含む): 46888740

約数和(自身を除く): 25399790

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 175, 179, 245, 343, 350, 358, 490, 686, 895, 1225, 1253, 1715, 1790, 2401, 2450, 2506, 3430, 4475, 4802, 6265, 8575, 8771, 8950, 12005, 12530, 17150, 17542, 24010, 31325, 43855, 60025, 61397, 62650, 87710, 120050, 122794, 219275, 306985, 429779, 438550, 613970, 859558, 1534925, 2148895, 3069850, 4297790, 10744475, 21488950]

約数ペア:

[(1, 21488950), (2, 10744475), (5, 4297790), (7, 3069850), (10, 2148895), (14, 1534925), (25, 859558), (35, 613970), (49, 438550), (50, 429779), (70, 306985), (98, 219275), (175, 122794), (179, 120050), (245, 87710), (343, 62650), (350, 61397), (358, 60025), (490, 43855), (686, 31325), (895, 24010), (1225, 17542), (1253, 17150), (1715, 12530), (1790, 12005), (2401, 8950), (2450, 8771), (2506, 8575), (3430, 6265), (4475, 4802)]