21651200

素因数分解:

$2^8\times 5^2\times {\mathrm{17}}^1\times {\mathrm{199}}^1$

素因数の和:242

約数の個数: 108

約数和(自身を含む): 57027600

約数和(自身を除く): 35376400

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 50, 64, 68, 80, 85, 100, 128, 136, 160, 170, 199, 200, 256, 272, 320, 340, 398, 400, 425, 544, 640, 680, 796, 800, 850, 995, 1088, 1280, 1360, 1592, 1600, 1700, 1990, 2176, 2720, 3184, 3200, 3383, 3400, 3980, 4352, 4975, 5440, 6368, 6400, 6766, 6800, 7960, 9950, 10880, 12736, 13532, 13600, 15920, 16915, 19900, 21760, 25472, 27064, 27200, 31840, 33830, 39800, 50944, 54128, 54400, 63680, 67660, 79600, 84575, 108256, 108800, 127360, 135320, 159200, 169150, 216512, 254720, 270640, 318400, 338300, 433024, 541280, 636800, 676600, 866048, 1082560, 1273600, 1353200, 2165120, 2706400, 4330240, 5412800, 10825600, 21651200]

約数ペア:

[(1, 21651200), (2, 10825600), (4, 5412800), (5, 4330240), (8, 2706400), (10, 2165120), (16, 1353200), (17, 1273600), (20, 1082560), (25, 866048), (32, 676600), (34, 636800), (40, 541280), (50, 433024), (64, 338300), (68, 318400), (80, 270640), (85, 254720), (100, 216512), (128, 169150), (136, 159200), (160, 135320), (170, 127360), (199, 108800), (200, 108256), (256, 84575), (272, 79600), (320, 67660), (340, 63680), (398, 54400), (400, 54128), (425, 50944), (544, 39800), (640, 33830), (680, 31840), (796, 27200), (800, 27064), (850, 25472), (995, 21760), (1088, 19900), (1280, 16915), (1360, 15920), (1592, 13600), (1600, 13532), (1700, 12736), (1990, 10880), (2176, 9950), (2720, 7960), (3184, 6800), (3200, 6766), (3383, 6400), (3400, 6368), (3980, 5440), (4352, 4975)]