20512245

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2843}}^1$

素因数の和:2901

約数の個数: 32

約数和(自身を含む): 36312192

約数和(自身を除く): 15799947

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 2843, 7215, 8529, 14215, 36959, 42645, 105191, 110877, 184795, 315573, 525955, 554385, 1367483, 1577865, 4102449, 6837415, 20512245]

約数ペア:

[(1, 20512245), (3, 6837415), (5, 4102449), (13, 1577865), (15, 1367483), (37, 554385), (39, 525955), (65, 315573), (111, 184795), (185, 110877), (195, 105191), (481, 42645), (555, 36959), (1443, 14215), (2405, 8529), (2843, 7215)]