21385616

素因数分解:

$2^4\times 7^1\times {\mathrm{79}}^1\times {\mathrm{2417}}^1$

素因数の和:2511

約数の個数: 40

約数和(自身を含む): 47973120

約数和(自身を除く): 26587504

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 79, 112, 158, 316, 553, 632, 1106, 1264, 2212, 2417, 4424, 4834, 8848, 9668, 16919, 19336, 33838, 38672, 67676, 135352, 190943, 270704, 381886, 763772, 1336601, 1527544, 2673202, 3055088, 5346404, 10692808, 21385616]

約数ペア:

[(1, 21385616), (2, 10692808), (4, 5346404), (7, 3055088), (8, 2673202), (14, 1527544), (16, 1336601), (28, 763772), (56, 381886), (79, 270704), (112, 190943), (158, 135352), (316, 67676), (553, 38672), (632, 33838), (1106, 19336), (1264, 16919), (2212, 9668), (2417, 8848), (4424, 4834)]