21867950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1979}}^1$

素因数の和:2021

約数の個数: 48

約数和(自身を含む): 46403280

約数和(自身を除く): 24535330

約数列:

[1, 2, 5, 10, 13, 17, 25, 26, 34, 50, 65, 85, 130, 170, 221, 325, 425, 442, 650, 850, 1105, 1979, 2210, 3958, 5525, 9895, 11050, 19790, 25727, 33643, 49475, 51454, 67286, 98950, 128635, 168215, 257270, 336430, 437359, 643175, 841075, 874718, 1286350, 1682150, 2186795, 4373590, 10933975, 21867950]

約数ペア:

[(1, 21867950), (2, 10933975), (5, 4373590), (10, 2186795), (13, 1682150), (17, 1286350), (25, 874718), (26, 841075), (34, 643175), (50, 437359), (65, 336430), (85, 257270), (130, 168215), (170, 128635), (221, 98950), (325, 67286), (425, 51454), (442, 49475), (650, 33643), (850, 25727), (1105, 19790), (1979, 11050), (2210, 9895), (3958, 5525)]