645813

素因数分解:

$3^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1$

素因数の和:103

約数の個数: 40

約数和(自身を含む): 1184832

約数和(自身を除く): 539019

約数列:

[1, 3, 7, 9, 17, 21, 27, 51, 63, 67, 81, 119, 153, 189, 201, 357, 459, 469, 567, 603, 1071, 1139, 1377, 1407, 1809, 3213, 3417, 4221, 5427, 7973, 9639, 10251, 12663, 23919, 30753, 37989, 71757, 92259, 215271, 645813]

約数ペア:

[(1, 645813), (3, 215271), (7, 92259), (9, 71757), (17, 37989), (21, 30753), (27, 23919), (51, 12663), (63, 10251), (67, 9639), (81, 7973), (119, 5427), (153, 4221), (189, 3417), (201, 3213), (357, 1809), (459, 1407), (469, 1377), (567, 1139), (603, 1071)]