20191875

素因数分解:

$3^1\times 5^4\times {\mathrm{11}}^2\times {\mathrm{89}}^1$

素因数の和:134

約数の個数: 60

約数和(自身を含む): 37394280

約数和(自身を除く): 17202405

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 89, 121, 125, 165, 267, 275, 363, 375, 445, 605, 625, 825, 979, 1335, 1375, 1815, 1875, 2225, 2937, 3025, 4125, 4895, 6675, 6875, 9075, 10769, 11125, 14685, 15125, 20625, 24475, 32307, 33375, 45375, 53845, 55625, 73425, 75625, 122375, 161535, 166875, 226875, 269225, 367125, 611875, 807675, 1346125, 1835625, 4038375, 6730625, 20191875]

約数ペア:

[(1, 20191875), (3, 6730625), (5, 4038375), (11, 1835625), (15, 1346125), (25, 807675), (33, 611875), (55, 367125), (75, 269225), (89, 226875), (121, 166875), (125, 161535), (165, 122375), (267, 75625), (275, 73425), (363, 55625), (375, 53845), (445, 45375), (605, 33375), (625, 32307), (825, 24475), (979, 20625), (1335, 15125), (1375, 14685), (1815, 11125), (1875, 10769), (2225, 9075), (2937, 6875), (3025, 6675), (4125, 4895)]