21965034

素因数分解:

$2^1\times 3^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{821}}^1$

素因数の和:860

約数の個数: 64

約数和(自身を含む): 55238400

約数和(自身を除く): 33273366

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 343, 546, 637, 686, 821, 1029, 1274, 1642, 1911, 2058, 2463, 3822, 4459, 4926, 5747, 8918, 10673, 11494, 13377, 17241, 21346, 26754, 32019, 34482, 40229, 64038, 74711, 80458, 120687, 149422, 224133, 241374, 281603, 448266, 522977, 563206, 844809, 1045954, 1568931, 1689618, 3137862, 3660839, 7321678, 10982517, 21965034]

約数ペア:

[(1, 21965034), (2, 10982517), (3, 7321678), (6, 3660839), (7, 3137862), (13, 1689618), (14, 1568931), (21, 1045954), (26, 844809), (39, 563206), (42, 522977), (49, 448266), (78, 281603), (91, 241374), (98, 224133), (147, 149422), (182, 120687), (273, 80458), (294, 74711), (343, 64038), (546, 40229), (637, 34482), (686, 32019), (821, 26754), (1029, 21346), (1274, 17241), (1642, 13377), (1911, 11494), (2058, 10673), (2463, 8918), (3822, 5747), (4459, 4926)]