130520120

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1\times {\mathrm{863}}^1$

素因数の和:1092

約数の個数: 64

約数和(自身を含む): 311040000

約数和(自身を除く): 180519880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 199, 380, 398, 760, 796, 863, 995, 1592, 1726, 1990, 3452, 3781, 3980, 4315, 6904, 7562, 7960, 8630, 15124, 16397, 17260, 18905, 30248, 32794, 34520, 37810, 65588, 75620, 81985, 131176, 151240, 163970, 171737, 327940, 343474, 655880, 686948, 858685, 1373896, 1717370, 3263003, 3434740, 6526006, 6869480, 13052012, 16315015, 26104024, 32630030, 65260060, 130520120]

約数ペア:

[(1, 130520120), (2, 65260060), (4, 32630030), (5, 26104024), (8, 16315015), (10, 13052012), (19, 6869480), (20, 6526006), (38, 3434740), (40, 3263003), (76, 1717370), (95, 1373896), (152, 858685), (190, 686948), (199, 655880), (380, 343474), (398, 327940), (760, 171737), (796, 163970), (863, 151240), (995, 131176), (1592, 81985), (1726, 75620), (1990, 65588), (3452, 37810), (3781, 34520), (3980, 32794), (4315, 30248), (6904, 18905), (7562, 17260), (7960, 16397), (8630, 15124)]