21865000

素因数分解:

$2^3\times 5^4\times {\mathrm{4373}}^1$

素因数の和:4399

約数の個数: 40

約数和(自身を含む): 51241410

約数和(自身を除く): 29376410

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 625, 1000, 1250, 2500, 4373, 5000, 8746, 17492, 21865, 34984, 43730, 87460, 109325, 174920, 218650, 437300, 546625, 874600, 1093250, 2186500, 2733125, 4373000, 5466250, 10932500, 21865000]

約数ペア:

[(1, 21865000), (2, 10932500), (4, 5466250), (5, 4373000), (8, 2733125), (10, 2186500), (20, 1093250), (25, 874600), (40, 546625), (50, 437300), (100, 218650), (125, 174920), (200, 109325), (250, 87460), (500, 43730), (625, 34984), (1000, 21865), (1250, 17492), (2500, 8746), (4373, 5000)]