81887260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{3461}}^1$

素因数の和:3503

約数の個数: 72

約数和(自身を含む): 212871456

約数和(自身を除く): 130984196

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 52, 65, 70, 91, 130, 140, 169, 182, 260, 338, 364, 455, 676, 845, 910, 1183, 1690, 1820, 2366, 3380, 3461, 4732, 5915, 6922, 11830, 13844, 17305, 23660, 24227, 34610, 44993, 48454, 69220, 89986, 96908, 121135, 179972, 224965, 242270, 314951, 449930, 484540, 584909, 629902, 899860, 1169818, 1259804, 1574755, 2339636, 2924545, 3149510, 4094363, 5849090, 6299020, 8188726, 11698180, 16377452, 20471815, 40943630, 81887260]

約数ペア:

[(1, 81887260), (2, 40943630), (4, 20471815), (5, 16377452), (7, 11698180), (10, 8188726), (13, 6299020), (14, 5849090), (20, 4094363), (26, 3149510), (28, 2924545), (35, 2339636), (52, 1574755), (65, 1259804), (70, 1169818), (91, 899860), (130, 629902), (140, 584909), (169, 484540), (182, 449930), (260, 314951), (338, 242270), (364, 224965), (455, 179972), (676, 121135), (845, 96908), (910, 89986), (1183, 69220), (1690, 48454), (1820, 44993), (2366, 34610), (3380, 24227), (3461, 23660), (4732, 17305), (5915, 13844), (6922, 11830)]