20937525

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{2099}}^1$

素因数の和:2138

約数の個数: 48

約数和(自身を含む): 41664000

約数和(自身を除く): 20726475

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 2099, 3325, 6297, 9975, 10495, 14693, 31485, 39881, 44079, 52475, 73465, 119643, 157425, 199405, 220395, 279167, 367325, 598215, 837501, 997025, 1101975, 1395835, 2991075, 4187505, 6979175, 20937525]

約数ペア:

[(1, 20937525), (3, 6979175), (5, 4187505), (7, 2991075), (15, 1395835), (19, 1101975), (21, 997025), (25, 837501), (35, 598215), (57, 367325), (75, 279167), (95, 220395), (105, 199405), (133, 157425), (175, 119643), (285, 73465), (399, 52475), (475, 44079), (525, 39881), (665, 31485), (1425, 14693), (1995, 10495), (2099, 9975), (3325, 6297)]