18904575

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{173}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 33140736

約数和(自身を除く): 14236161

約数列:

[1, 3, 5, 15, 25, 31, 47, 75, 93, 141, 155, 173, 235, 465, 519, 705, 775, 865, 1175, 1457, 2325, 2595, 3525, 4325, 4371, 5363, 7285, 8131, 12975, 16089, 21855, 24393, 26815, 36425, 40655, 80445, 109275, 121965, 134075, 203275, 252061, 402225, 609825, 756183, 1260305, 3780915, 6301525, 18904575]

約数ペア:

[(1, 18904575), (3, 6301525), (5, 3780915), (15, 1260305), (25, 756183), (31, 609825), (47, 402225), (75, 252061), (93, 203275), (141, 134075), (155, 121965), (173, 109275), (235, 80445), (465, 40655), (519, 36425), (705, 26815), (775, 24393), (865, 21855), (1175, 16089), (1457, 12975), (2325, 8131), (2595, 7285), (3525, 5363), (4325, 4371)]