21857332

素因数分解:

$2^2\times 7^3\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:293

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 23502668

約数列:

[1, 2, 4, 7, 14, 28, 49, 89, 98, 178, 179, 196, 343, 356, 358, 623, 686, 716, 1246, 1253, 1372, 2492, 2506, 4361, 5012, 8722, 8771, 15931, 17444, 17542, 30527, 31862, 35084, 61054, 61397, 63724, 111517, 122108, 122794, 223034, 245588, 446068, 780619, 1561238, 3122476, 5464333, 10928666, 21857332]

約数ペア:

[(1, 21857332), (2, 10928666), (4, 5464333), (7, 3122476), (14, 1561238), (28, 780619), (49, 446068), (89, 245588), (98, 223034), (178, 122794), (179, 122108), (196, 111517), (343, 63724), (356, 61397), (358, 61054), (623, 35084), (686, 31862), (716, 30527), (1246, 17542), (1253, 17444), (1372, 15931), (2492, 8771), (2506, 8722), (4361, 5012)]