21000298564

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{273029}}^1$

素因数の和:273148

約数の個数: 48

約数和(自身を含む): 43667326080

約数和(自身を除く): 22667027516

約数列:

[1, 2, 4, 7, 14, 28, 41, 67, 82, 134, 164, 268, 287, 469, 574, 938, 1148, 1876, 2747, 5494, 10988, 19229, 38458, 76916, 273029, 546058, 1092116, 1911203, 3822406, 7644812, 11194189, 18292943, 22388378, 36585886, 44776756, 73171772, 78359323, 128050601, 156718646, 256101202, 313437292, 512202404, 750010663, 1500021326, 3000042652, 5250074641, 10500149282, 21000298564]

約数ペア:

[(1, 21000298564), (2, 10500149282), (4, 5250074641), (7, 3000042652), (14, 1500021326), (28, 750010663), (41, 512202404), (67, 313437292), (82, 256101202), (134, 156718646), (164, 128050601), (268, 78359323), (287, 73171772), (469, 44776756), (574, 36585886), (938, 22388378), (1148, 18292943), (1876, 11194189), (2747, 7644812), (5494, 3822406), (10988, 1911203), (19229, 1092116), (38458, 546058), (76916, 273029)]