21542895

素因数分解:

$3^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{163}}^1$

素因数の和:277

約数の個数: 64

約数和(自身を含む): 42508800

約数和(自身を除く): 20965905

約数列:

[1, 3, 5, 9, 11, 15, 27, 33, 45, 55, 89, 99, 135, 163, 165, 267, 297, 445, 489, 495, 801, 815, 979, 1335, 1467, 1485, 1793, 2403, 2445, 2937, 4005, 4401, 4895, 5379, 7335, 8811, 8965, 12015, 14507, 14685, 16137, 22005, 26433, 26895, 43521, 44055, 48411, 72535, 80685, 130563, 132165, 159577, 217605, 242055, 391689, 478731, 652815, 797885, 1436193, 1958445, 2393655, 4308579, 7180965, 21542895]

約数ペア:

[(1, 21542895), (3, 7180965), (5, 4308579), (9, 2393655), (11, 1958445), (15, 1436193), (27, 797885), (33, 652815), (45, 478731), (55, 391689), (89, 242055), (99, 217605), (135, 159577), (163, 132165), (165, 130563), (267, 80685), (297, 72535), (445, 48411), (489, 44055), (495, 43521), (801, 26895), (815, 26433), (979, 22005), (1335, 16137), (1467, 14685), (1485, 14507), (1793, 12015), (2403, 8965), (2445, 8811), (2937, 7335), (4005, 5379), (4401, 4895)]