12440920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{127}}^1$

素因数の和:248

約数の個数: 64

約数和(自身を含む): 29491200

約数和(自身を除く): 17050280

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 79, 124, 127, 155, 158, 248, 254, 310, 316, 395, 508, 620, 632, 635, 790, 1016, 1240, 1270, 1580, 2449, 2540, 3160, 3937, 4898, 5080, 7874, 9796, 10033, 12245, 15748, 19592, 19685, 20066, 24490, 31496, 39370, 40132, 48980, 50165, 78740, 80264, 97960, 100330, 157480, 200660, 311023, 401320, 622046, 1244092, 1555115, 2488184, 3110230, 6220460, 12440920]

約数ペア:

[(1, 12440920), (2, 6220460), (4, 3110230), (5, 2488184), (8, 1555115), (10, 1244092), (20, 622046), (31, 401320), (40, 311023), (62, 200660), (79, 157480), (124, 100330), (127, 97960), (155, 80264), (158, 78740), (248, 50165), (254, 48980), (310, 40132), (316, 39370), (395, 31496), (508, 24490), (620, 20066), (632, 19685), (635, 19592), (790, 15748), (1016, 12245), (1240, 10033), (1270, 9796), (1580, 7874), (2449, 5080), (2540, 4898), (3160, 3937)]