20998400

素因数分解:

$2^8\times 5^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1$

素因数の和:236

約数の個数: 108

約数和(自身を含む): 55316772

約数和(自身を除く): 34318372

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, 193, 200, 256, 272, 320, 340, 386, 400, 425, 544, 640, 680, 772, 800, 850, 965, 1088, 1280, 1360, 1544, 1600, 1700, 1930, 2176, 2720, 3088, 3200, 3281, 3400, 3860, 4352, 4825, 5440, 6176, 6400, 6562, 6800, 7720, 9650, 10880, 12352, 13124, 13600, 15440, 16405, 19300, 21760, 24704, 26248, 27200, 30880, 32810, 38600, 49408, 52496, 54400, 61760, 65620, 77200, 82025, 104992, 108800, 123520, 131240, 154400, 164050, 209984, 247040, 262480, 308800, 328100, 419968, 524960, 617600, 656200, 839936, 1049920, 1235200, 1312400, 2099840, 2624800, 4199680, 5249600, 10499200, 20998400]

約数ペア:

[(1, 20998400), (2, 10499200), (4, 5249600), (5, 4199680), (8, 2624800), (10, 2099840), (16, 1312400), (17, 1235200), (20, 1049920), (25, 839936), (32, 656200), (34, 617600), (40, 524960), (50, 419968), (64, 328100), (68, 308800), (80, 262480), (85, 247040), (100, 209984), (128, 164050), (136, 154400), (160, 131240), (170, 123520), (193, 108800), (200, 104992), (256, 82025), (272, 77200), (320, 65620), (340, 61760), (386, 54400), (400, 52496), (425, 49408), (544, 38600), (640, 32810), (680, 30880), (772, 27200), (800, 26248), (850, 24704), (965, 21760), (1088, 19300), (1280, 16405), (1360, 15440), (1544, 13600), (1600, 13124), (1700, 12352), (1930, 10880), (2176, 9650), (2720, 7720), (3088, 6800), (3200, 6562), (3281, 6400), (3400, 6176), (3860, 5440), (4352, 4825)]