217811115

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{809}}^1$

素因数の和:1044

約数の個数: 48

約数和(自身を含む): 392221440

約数和(自身を除く): 174410325

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 193, 279, 465, 579, 809, 965, 1395, 1737, 2427, 2895, 4045, 5983, 7281, 8685, 12135, 17949, 25079, 29915, 36405, 53847, 75237, 89745, 125395, 156137, 225711, 269235, 376185, 468411, 780685, 1128555, 1405233, 2342055, 4840247, 7026165, 14520741, 24201235, 43562223, 72603705, 217811115]

約数ペア:

[(1, 217811115), (3, 72603705), (5, 43562223), (9, 24201235), (15, 14520741), (31, 7026165), (45, 4840247), (93, 2342055), (155, 1405233), (193, 1128555), (279, 780685), (465, 468411), (579, 376185), (809, 269235), (965, 225711), (1395, 156137), (1737, 125395), (2427, 89745), (2895, 75237), (4045, 53847), (5983, 36405), (7281, 29915), (8685, 25079), (12135, 17949)]