18881325

素因数分解:

$3^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{2707}}^1$

素因数の和:2754

約数の個数: 36

約数和(自身を含む): 34922368

約数和(自身を除く): 16041043

約数列:

[1, 3, 5, 9, 15, 25, 31, 45, 75, 93, 155, 225, 279, 465, 775, 1395, 2325, 2707, 6975, 8121, 13535, 24363, 40605, 67675, 83917, 121815, 203025, 251751, 419585, 609075, 755253, 1258755, 2097925, 3776265, 6293775, 18881325]

約数ペア:

[(1, 18881325), (3, 6293775), (5, 3776265), (9, 2097925), (15, 1258755), (25, 755253), (31, 609075), (45, 419585), (75, 251751), (93, 203025), (155, 121815), (225, 83917), (279, 67675), (465, 40605), (775, 24363), (1395, 13535), (2325, 8121), (2707, 6975)]