20454400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1$

素因数の和:94

約数の個数: 132

約数和(自身を含む): 54826848

約数和(自身を除く): 34372448

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 25, 32, 34, 40, 47, 50, 64, 68, 80, 85, 94, 100, 128, 136, 160, 170, 188, 200, 235, 256, 272, 320, 340, 376, 400, 425, 470, 512, 544, 640, 680, 752, 799, 800, 850, 940, 1024, 1088, 1175, 1280, 1360, 1504, 1598, 1600, 1700, 1880, 2176, 2350, 2560, 2720, 3008, 3196, 3200, 3400, 3760, 3995, 4352, 4700, 5120, 5440, 6016, 6392, 6400, 6800, 7520, 7990, 8704, 9400, 10880, 12032, 12784, 12800, 13600, 15040, 15980, 17408, 18800, 19975, 21760, 24064, 25568, 25600, 27200, 30080, 31960, 37600, 39950, 43520, 48128, 51136, 54400, 60160, 63920, 75200, 79900, 87040, 102272, 108800, 120320, 127840, 150400, 159800, 204544, 217600, 240640, 255680, 300800, 319600, 409088, 435200, 511360, 601600, 639200, 818176, 1022720, 1203200, 1278400, 2045440, 2556800, 4090880, 5113600, 10227200, 20454400]

約数ペア:

[(1, 20454400), (2, 10227200), (4, 5113600), (5, 4090880), (8, 2556800), (10, 2045440), (16, 1278400), (17, 1203200), (20, 1022720), (25, 818176), (32, 639200), (34, 601600), (40, 511360), (47, 435200), (50, 409088), (64, 319600), (68, 300800), (80, 255680), (85, 240640), (94, 217600), (100, 204544), (128, 159800), (136, 150400), (160, 127840), (170, 120320), (188, 108800), (200, 102272), (235, 87040), (256, 79900), (272, 75200), (320, 63920), (340, 60160), (376, 54400), (400, 51136), (425, 48128), (470, 43520), (512, 39950), (544, 37600), (640, 31960), (680, 30080), (752, 27200), (799, 25600), (800, 25568), (850, 24064), (940, 21760), (1024, 19975), (1088, 18800), (1175, 17408), (1280, 15980), (1360, 15040), (1504, 13600), (1598, 12800), (1600, 12784), (1700, 12032), (1880, 10880), (2176, 9400), (2350, 8704), (2560, 7990), (2720, 7520), (3008, 6800), (3196, 6400), (3200, 6392), (3400, 6016), (3760, 5440), (3995, 5120), (4352, 4700)]