217854

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:54

約数の個数: 72

約数和(自身を含む): 622440

約数和(自身を除く): 404586

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 19, 21, 26, 38, 39, 42, 49, 57, 63, 78, 91, 98, 114, 117, 126, 133, 147, 171, 182, 234, 247, 266, 273, 294, 342, 399, 441, 494, 546, 637, 741, 798, 819, 882, 931, 1197, 1274, 1482, 1638, 1729, 1862, 1911, 2223, 2394, 2793, 3458, 3822, 4446, 5187, 5586, 5733, 8379, 10374, 11466, 12103, 15561, 16758, 24206, 31122, 36309, 72618, 108927, 217854]

約数ペア:

[(1, 217854), (2, 108927), (3, 72618), (6, 36309), (7, 31122), (9, 24206), (13, 16758), (14, 15561), (18, 12103), (19, 11466), (21, 10374), (26, 8379), (38, 5733), (39, 5586), (42, 5187), (49, 4446), (57, 3822), (63, 3458), (78, 2793), (91, 2394), (98, 2223), (114, 1911), (117, 1862), (126, 1729), (133, 1638), (147, 1482), (171, 1274), (182, 1197), (234, 931), (247, 882), (266, 819), (273, 798), (294, 741), (342, 637), (399, 546), (441, 494)]