20605280265

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{339433}}^1$

素因数の和:339534

約数の個数: 48

約数和(自身を含む): 38125226880

約数和(自身を除く): 17519946615

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 71, 95, 171, 213, 285, 355, 639, 855, 1065, 1349, 3195, 4047, 6745, 12141, 20235, 60705, 339433, 1018299, 1697165, 3054897, 5091495, 6449227, 15274485, 19347681, 24099743, 32246135, 58043043, 72299229, 96738405, 120498715, 216897687, 290215215, 361496145, 457895117, 1084488435, 1373685351, 2289475585, 4121056053, 6868426755, 20605280265]

約数ペア:

[(1, 20605280265), (3, 6868426755), (5, 4121056053), (9, 2289475585), (15, 1373685351), (19, 1084488435), (45, 457895117), (57, 361496145), (71, 290215215), (95, 216897687), (171, 120498715), (213, 96738405), (285, 72299229), (355, 58043043), (639, 32246135), (855, 24099743), (1065, 19347681), (1349, 15274485), (3195, 6449227), (4047, 5091495), (6745, 3054897), (12141, 1697165), (20235, 1018299), (60705, 339433)]