721278

素因数分解:

$2^1\times 3^3\times {\mathrm{19}}^2\times {\mathrm{37}}^1$

素因数の和:86

約数の個数: 48

約数和(自身を含む): 1737360

約数和(自身を除く): 1016082

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 37, 38, 54, 57, 74, 111, 114, 171, 222, 333, 342, 361, 513, 666, 703, 722, 999, 1026, 1083, 1406, 1998, 2109, 2166, 3249, 4218, 6327, 6498, 9747, 12654, 13357, 18981, 19494, 26714, 37962, 40071, 80142, 120213, 240426, 360639, 721278]

約数ペア:

[(1, 721278), (2, 360639), (3, 240426), (6, 120213), (9, 80142), (18, 40071), (19, 37962), (27, 26714), (37, 19494), (38, 18981), (54, 13357), (57, 12654), (74, 9747), (111, 6498), (114, 6327), (171, 4218), (222, 3249), (333, 2166), (342, 2109), (361, 1998), (513, 1406), (666, 1083), (703, 1026), (722, 999)]