21939428

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{659}}^1$

素因数の和:740

約数の個数: 48

約数和(自身を含む): 46569600

約数和(自身を除く): 24630172

約数列:

[1, 2, 4, 7, 14, 28, 29, 41, 58, 82, 116, 164, 203, 287, 406, 574, 659, 812, 1148, 1189, 1318, 2378, 2636, 4613, 4756, 8323, 9226, 16646, 18452, 19111, 27019, 33292, 38222, 54038, 76444, 108076, 133777, 189133, 267554, 378266, 535108, 756532, 783551, 1567102, 3134204, 5484857, 10969714, 21939428]

約数ペア:

[(1, 21939428), (2, 10969714), (4, 5484857), (7, 3134204), (14, 1567102), (28, 783551), (29, 756532), (41, 535108), (58, 378266), (82, 267554), (116, 189133), (164, 133777), (203, 108076), (287, 76444), (406, 54038), (574, 38222), (659, 33292), (812, 27019), (1148, 19111), (1189, 18452), (1318, 16646), (2378, 9226), (2636, 8323), (4613, 4756)]