21650520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{10613}}^1$

素因数の和:10644

約数の個数: 64

約数和(自身を含む): 68778720

約数和(自身を除く): 47128200

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 51, 60, 68, 85, 102, 120, 136, 170, 204, 255, 340, 408, 510, 680, 1020, 2040, 10613, 21226, 31839, 42452, 53065, 63678, 84904, 106130, 127356, 159195, 180421, 212260, 254712, 318390, 360842, 424520, 541263, 636780, 721684, 902105, 1082526, 1273560, 1443368, 1804210, 2165052, 2706315, 3608420, 4330104, 5412630, 7216840, 10825260, 21650520]

約数ペア:

[(1, 21650520), (2, 10825260), (3, 7216840), (4, 5412630), (5, 4330104), (6, 3608420), (8, 2706315), (10, 2165052), (12, 1804210), (15, 1443368), (17, 1273560), (20, 1082526), (24, 902105), (30, 721684), (34, 636780), (40, 541263), (51, 424520), (60, 360842), (68, 318390), (85, 254712), (102, 212260), (120, 180421), (136, 159195), (170, 127356), (204, 106130), (255, 84904), (340, 63678), (408, 53065), (510, 42452), (680, 31839), (1020, 21226), (2040, 10613)]