2720025

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1$

素因数の和:191

約数の個数: 72

約数和(自身を含む): 6112704

約数和(自身を除く): 3392679

約数列:

[1, 3, 5, 7, 9, 11, 15, 21, 25, 33, 35, 45, 55, 63, 75, 77, 99, 105, 157, 165, 175, 225, 231, 275, 315, 385, 471, 495, 525, 693, 785, 825, 1099, 1155, 1413, 1575, 1727, 1925, 2355, 2475, 3297, 3465, 3925, 5181, 5495, 5775, 7065, 8635, 9891, 11775, 12089, 15543, 16485, 17325, 25905, 27475, 35325, 36267, 43175, 49455, 60445, 77715, 82425, 108801, 129525, 181335, 247275, 302225, 388575, 544005, 906675, 2720025]

約数ペア:

[(1, 2720025), (3, 906675), (5, 544005), (7, 388575), (9, 302225), (11, 247275), (15, 181335), (21, 129525), (25, 108801), (33, 82425), (35, 77715), (45, 60445), (55, 49455), (63, 43175), (75, 36267), (77, 35325), (99, 27475), (105, 25905), (157, 17325), (165, 16485), (175, 15543), (225, 12089), (231, 11775), (275, 9891), (315, 8635), (385, 7065), (471, 5775), (495, 5495), (525, 5181), (693, 3925), (785, 3465), (825, 3297), (1099, 2475), (1155, 2355), (1413, 1925), (1575, 1727)]