391997375

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:465

約数の個数: 64

約数和(自身を含む): 616412160

約数和(自身を除く): 224414785

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 125, 139, 175, 275, 293, 385, 695, 875, 973, 1375, 1465, 1529, 1925, 2051, 3223, 3475, 4865, 7325, 7645, 9625, 10255, 10703, 16115, 17375, 22561, 24325, 36625, 38225, 40727, 51275, 53515, 80575, 112805, 121625, 191125, 203635, 256375, 267575, 285089, 402875, 447997, 564025, 1018175, 1337875, 1425445, 2239985, 2820125, 3135979, 5090875, 7127225, 11199925, 15679895, 35636125, 55999625, 78399475, 391997375]

約数ペア:

[(1, 391997375), (5, 78399475), (7, 55999625), (11, 35636125), (25, 15679895), (35, 11199925), (55, 7127225), (77, 5090875), (125, 3135979), (139, 2820125), (175, 2239985), (275, 1425445), (293, 1337875), (385, 1018175), (695, 564025), (875, 447997), (973, 402875), (1375, 285089), (1465, 267575), (1529, 256375), (1925, 203635), (2051, 191125), (3223, 121625), (3475, 112805), (4865, 80575), (7325, 53515), (7645, 51275), (9625, 40727), (10255, 38225), (10703, 36625), (16115, 24325), (17375, 22561)]