28779075

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{9839}}^1$

素因数の和:9868

約数の個数: 36

約数和(自身を含む): 55517280

約数和(自身を除く): 26738205

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 117, 195, 225, 325, 585, 975, 2925, 9839, 29517, 49195, 88551, 127907, 147585, 245975, 383721, 442755, 639535, 737925, 1151163, 1918605, 2213775, 3197675, 5755815, 9593025, 28779075]

約数ペア:

[(1, 28779075), (3, 9593025), (5, 5755815), (9, 3197675), (13, 2213775), (15, 1918605), (25, 1151163), (39, 737925), (45, 639535), (65, 442755), (75, 383721), (117, 245975), (195, 147585), (225, 127907), (325, 88551), (585, 49195), (975, 29517), (2925, 9839)]