28015725

素因数分解:

$3^1\times 5^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 49104000

約数和(自身を除く): 21088275

約数列:

[1, 3, 5, 15, 23, 25, 69, 75, 109, 115, 149, 327, 345, 447, 545, 575, 745, 1635, 1725, 2235, 2507, 2725, 3427, 3725, 7521, 8175, 10281, 11175, 12535, 16241, 17135, 37605, 48723, 51405, 62675, 81205, 85675, 188025, 243615, 257025, 373543, 406025, 1120629, 1218075, 1867715, 5603145, 9338575, 28015725]

約数ペア:

[(1, 28015725), (3, 9338575), (5, 5603145), (15, 1867715), (23, 1218075), (25, 1120629), (69, 406025), (75, 373543), (109, 257025), (115, 243615), (149, 188025), (327, 85675), (345, 81205), (447, 62675), (545, 51405), (575, 48723), (745, 37605), (1635, 17135), (1725, 16241), (2235, 12535), (2507, 11175), (2725, 10281), (3427, 8175), (3725, 7521)]