21807225

素因数分解:

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

素因数の和:133

約数の個数: 90

約数和(自身を含む): 44899470

約数和(自身を除く): 23092245

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 89, 99, 121, 135, 165, 225, 267, 275, 297, 363, 405, 445, 495, 605, 675, 801, 825, 891, 979, 1089, 1335, 1485, 1815, 2025, 2225, 2403, 2475, 2937, 3025, 3267, 4005, 4455, 4895, 5445, 6675, 7209, 7425, 8811, 9075, 9801, 10769, 12015, 14685, 16335, 20025, 22275, 24475, 26433, 27225, 32307, 36045, 44055, 49005, 53845, 60075, 73425, 79299, 81675, 96921, 132165, 161535, 180225, 220275, 245025, 269225, 290763, 396495, 484605, 660825, 807675, 872289, 1453815, 1982475, 2423025, 4361445, 7269075, 21807225]

約数ペア:

[(1, 21807225), (3, 7269075), (5, 4361445), (9, 2423025), (11, 1982475), (15, 1453815), (25, 872289), (27, 807675), (33, 660825), (45, 484605), (55, 396495), (75, 290763), (81, 269225), (89, 245025), (99, 220275), (121, 180225), (135, 161535), (165, 132165), (225, 96921), (267, 81675), (275, 79299), (297, 73425), (363, 60075), (405, 53845), (445, 49005), (495, 44055), (605, 36045), (675, 32307), (801, 27225), (825, 26433), (891, 24475), (979, 22275), (1089, 20025), (1335, 16335), (1485, 14685), (1815, 12015), (2025, 10769), (2225, 9801), (2403, 9075), (2475, 8811), (2937, 7425), (3025, 7209), (3267, 6675), (4005, 5445), (4455, 4895)]