21902050

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:283

約数の個数: 48

約数和(自身を含む): 42622272

約数和(自身を除く): 20720222

約数列:

[1, 2, 5, 10, 25, 43, 50, 61, 86, 122, 167, 215, 305, 334, 430, 610, 835, 1075, 1525, 1670, 2150, 2623, 3050, 4175, 5246, 7181, 8350, 10187, 13115, 14362, 20374, 26230, 35905, 50935, 65575, 71810, 101870, 131150, 179525, 254675, 359050, 438041, 509350, 876082, 2190205, 4380410, 10951025, 21902050]

約数ペア:

[(1, 21902050), (2, 10951025), (5, 4380410), (10, 2190205), (25, 876082), (43, 509350), (50, 438041), (61, 359050), (86, 254675), (122, 179525), (167, 131150), (215, 101870), (305, 71810), (334, 65575), (430, 50935), (610, 35905), (835, 26230), (1075, 20374), (1525, 14362), (1670, 13115), (2150, 10187), (2623, 8350), (3050, 7181), (4175, 5246)]