20511180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{6703}}^1$

素因数の和:6735

約数の個数: 72

約数和(自身を含む): 65886912

約数和(自身を除く): 45375732

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 306, 340, 510, 612, 765, 1020, 1530, 3060, 6703, 13406, 20109, 26812, 33515, 40218, 60327, 67030, 80436, 100545, 113951, 120654, 134060, 201090, 227902, 241308, 301635, 341853, 402180, 455804, 569755, 603270, 683706, 1025559, 1139510, 1206540, 1367412, 1709265, 2051118, 2279020, 3418530, 4102236, 5127795, 6837060, 10255590, 20511180]

約数ペア:

[(1, 20511180), (2, 10255590), (3, 6837060), (4, 5127795), (5, 4102236), (6, 3418530), (9, 2279020), (10, 2051118), (12, 1709265), (15, 1367412), (17, 1206540), (18, 1139510), (20, 1025559), (30, 683706), (34, 603270), (36, 569755), (45, 455804), (51, 402180), (60, 341853), (68, 301635), (85, 241308), (90, 227902), (102, 201090), (153, 134060), (170, 120654), (180, 113951), (204, 100545), (255, 80436), (306, 67030), (340, 60327), (510, 40218), (612, 33515), (765, 26812), (1020, 20109), (1530, 13406), (3060, 6703)]