20905600

素因数分解:

$2^7\times 5^2\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:210

約数の個数: 96

約数和(自身を含む): 53121600

約数和(自身を除く): 32216000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 47, 50, 64, 80, 94, 100, 128, 139, 160, 188, 200, 235, 278, 320, 376, 400, 470, 556, 640, 695, 752, 800, 940, 1112, 1175, 1390, 1504, 1600, 1880, 2224, 2350, 2780, 3008, 3200, 3475, 3760, 4448, 4700, 5560, 6016, 6533, 6950, 7520, 8896, 9400, 11120, 13066, 13900, 15040, 17792, 18800, 22240, 26132, 27800, 30080, 32665, 37600, 44480, 52264, 55600, 65330, 75200, 88960, 104528, 111200, 130660, 150400, 163325, 209056, 222400, 261320, 326650, 418112, 444800, 522640, 653300, 836224, 1045280, 1306600, 2090560, 2613200, 4181120, 5226400, 10452800, 20905600]

約数ペア:

[(1, 20905600), (2, 10452800), (4, 5226400), (5, 4181120), (8, 2613200), (10, 2090560), (16, 1306600), (20, 1045280), (25, 836224), (32, 653300), (40, 522640), (47, 444800), (50, 418112), (64, 326650), (80, 261320), (94, 222400), (100, 209056), (128, 163325), (139, 150400), (160, 130660), (188, 111200), (200, 104528), (235, 88960), (278, 75200), (320, 65330), (376, 55600), (400, 52264), (470, 44480), (556, 37600), (640, 32665), (695, 30080), (752, 27800), (800, 26132), (940, 22240), (1112, 18800), (1175, 17792), (1390, 15040), (1504, 13900), (1600, 13066), (1880, 11120), (2224, 9400), (2350, 8896), (2780, 7520), (3008, 6950), (3200, 6533), (3475, 6016), (3760, 5560), (4448, 4700)]