218685789

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{103}}^1\times {\mathrm{503}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 370685952

約数和(自身を除く): 152000163

約数列:

[1, 3, 7, 9, 21, 63, 67, 103, 201, 309, 469, 503, 603, 721, 927, 1407, 1509, 2163, 3521, 4221, 4527, 6489, 6901, 10563, 20703, 31689, 33701, 48307, 51809, 62109, 101103, 144921, 155427, 235907, 303309, 362663, 434763, 466281, 707721, 1087989, 2123163, 3263967, 3471203, 10413609, 24298421, 31240827, 72895263, 218685789]

約数ペア:

[(1, 218685789), (3, 72895263), (7, 31240827), (9, 24298421), (21, 10413609), (63, 3471203), (67, 3263967), (103, 2123163), (201, 1087989), (309, 707721), (469, 466281), (503, 434763), (603, 362663), (721, 303309), (927, 235907), (1407, 155427), (1509, 144921), (2163, 101103), (3521, 62109), (4221, 51809), (4527, 48307), (6489, 33701), (6901, 31689), (10563, 20703)]