161608520

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{619}}^1$

素因数の和:798

約数の個数: 64

約数和(自身を含む): 373636800

約数和(自身を除く): 212028280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 107, 122, 214, 244, 305, 428, 488, 535, 610, 619, 856, 1070, 1220, 1238, 2140, 2440, 2476, 3095, 4280, 4952, 6190, 6527, 12380, 13054, 24760, 26108, 32635, 37759, 52216, 65270, 66233, 75518, 130540, 132466, 151036, 188795, 261080, 264932, 302072, 331165, 377590, 529864, 662330, 755180, 1324660, 1510360, 2649320, 4040213, 8080426, 16160852, 20201065, 32321704, 40402130, 80804260, 161608520]

約数ペア:

[(1, 161608520), (2, 80804260), (4, 40402130), (5, 32321704), (8, 20201065), (10, 16160852), (20, 8080426), (40, 4040213), (61, 2649320), (107, 1510360), (122, 1324660), (214, 755180), (244, 662330), (305, 529864), (428, 377590), (488, 331165), (535, 302072), (610, 264932), (619, 261080), (856, 188795), (1070, 151036), (1220, 132466), (1238, 130540), (2140, 75518), (2440, 66233), (2476, 65270), (3095, 52216), (4280, 37759), (4952, 32635), (6190, 26108), (6527, 24760), (12380, 13054)]