12489280

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1259}}^1$

素因数の和:1307

約数の個数: 56

約数和(自身を含む): 30723840

約数和(自身を除く): 18234560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1259, 1984, 2480, 2518, 4960, 5036, 6295, 9920, 10072, 12590, 20144, 25180, 39029, 40288, 50360, 78058, 80576, 100720, 156116, 195145, 201440, 312232, 390290, 402880, 624464, 780580, 1248928, 1561160, 2497856, 3122320, 6244640, 12489280]

約数ペア:

[(1, 12489280), (2, 6244640), (4, 3122320), (5, 2497856), (8, 1561160), (10, 1248928), (16, 780580), (20, 624464), (31, 402880), (32, 390290), (40, 312232), (62, 201440), (64, 195145), (80, 156116), (124, 100720), (155, 80576), (160, 78058), (248, 50360), (310, 40288), (320, 39029), (496, 25180), (620, 20144), (992, 12590), (1240, 10072), (1259, 9920), (1984, 6295), (2480, 5036), (2518, 4960)]