21420350

素因数分解:

$2^1\times 5^2\times 7^3\times {\mathrm{1249}}^1$

素因数の和:1282

約数の個数: 48

約数和(自身を含む): 46500000

約数和(自身を除く): 25079650

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 49, 50, 70, 98, 175, 245, 343, 350, 490, 686, 1225, 1249, 1715, 2450, 2498, 3430, 6245, 8575, 8743, 12490, 17150, 17486, 31225, 43715, 61201, 62450, 87430, 122402, 218575, 306005, 428407, 437150, 612010, 856814, 1530025, 2142035, 3060050, 4284070, 10710175, 21420350]

約数ペア:

[(1, 21420350), (2, 10710175), (5, 4284070), (7, 3060050), (10, 2142035), (14, 1530025), (25, 856814), (35, 612010), (49, 437150), (50, 428407), (70, 306005), (98, 218575), (175, 122402), (245, 87430), (343, 62450), (350, 61201), (490, 43715), (686, 31225), (1225, 17486), (1249, 17150), (1715, 12490), (2450, 8743), (2498, 8575), (3430, 6245)]