31109580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{431}}^1$

素因数の和:847

約数の個数: 72

約数和(自身を含む): 94820544

約数和(自身を除く): 63710964

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 401, 431, 802, 862, 1203, 1293, 1604, 1724, 2005, 2155, 2406, 2586, 3609, 3879, 4010, 4310, 4812, 5172, 6015, 6465, 7218, 7758, 8020, 8620, 12030, 12930, 14436, 15516, 18045, 19395, 24060, 25860, 36090, 38790, 72180, 77580, 172831, 345662, 518493, 691324, 864155, 1036986, 1555479, 1728310, 2073972, 2592465, 3110958, 3456620, 5184930, 6221916, 7777395, 10369860, 15554790, 31109580]

約数ペア:

[(1, 31109580), (2, 15554790), (3, 10369860), (4, 7777395), (5, 6221916), (6, 5184930), (9, 3456620), (10, 3110958), (12, 2592465), (15, 2073972), (18, 1728310), (20, 1555479), (30, 1036986), (36, 864155), (45, 691324), (60, 518493), (90, 345662), (180, 172831), (401, 77580), (431, 72180), (802, 38790), (862, 36090), (1203, 25860), (1293, 24060), (1604, 19395), (1724, 18045), (2005, 15516), (2155, 14436), (2406, 12930), (2586, 12030), (3609, 8620), (3879, 8020), (4010, 7758), (4310, 7218), (4812, 6465), (5172, 6015)]