19938375

素因数分解:

$3^2\times 5^3\times {\mathrm{37}}^1\times {\mathrm{479}}^1$

素因数の和:537

約数の個数: 48

約数和(自身を含む): 36990720

約数和(自身を除く): 17052345

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 75, 111, 125, 185, 225, 333, 375, 479, 555, 925, 1125, 1437, 1665, 2395, 2775, 4311, 4625, 7185, 8325, 11975, 13875, 17723, 21555, 35925, 41625, 53169, 59875, 88615, 107775, 159507, 179625, 265845, 443075, 538875, 797535, 1329225, 2215375, 3987675, 6646125, 19938375]

約数ペア:

[(1, 19938375), (3, 6646125), (5, 3987675), (9, 2215375), (15, 1329225), (25, 797535), (37, 538875), (45, 443075), (75, 265845), (111, 179625), (125, 159507), (185, 107775), (225, 88615), (333, 59875), (375, 53169), (479, 41625), (555, 35925), (925, 21555), (1125, 17723), (1437, 13875), (1665, 11975), (2395, 8325), (2775, 7185), (4311, 4625)]