20778240

素因数分解:

$2^8\times 3^1\times 5^1\times 7^1\times {\mathrm{773}}^1$

素因数の和:804

約数の個数: 144

約数和(自身を含む): 75938688

約数和(自身を除く): 55160448

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 32, 35, 40, 42, 48, 56, 60, 64, 70, 80, 84, 96, 105, 112, 120, 128, 140, 160, 168, 192, 210, 224, 240, 256, 280, 320, 336, 384, 420, 448, 480, 560, 640, 672, 768, 773, 840, 896, 960, 1120, 1280, 1344, 1546, 1680, 1792, 1920, 2240, 2319, 2688, 3092, 3360, 3840, 3865, 4480, 4638, 5376, 5411, 6184, 6720, 7730, 8960, 9276, 10822, 11595, 12368, 13440, 15460, 16233, 18552, 21644, 23190, 24736, 26880, 27055, 30920, 32466, 37104, 43288, 46380, 49472, 54110, 61840, 64932, 74208, 81165, 86576, 92760, 98944, 108220, 123680, 129864, 148416, 162330, 173152, 185520, 197888, 216440, 247360, 259728, 296832, 324660, 346304, 371040, 432880, 494720, 519456, 593664, 649320, 692608, 742080, 865760, 989440, 1038912, 1298640, 1385216, 1484160, 1731520, 2077824, 2597280, 2968320, 3463040, 4155648, 5194560, 6926080, 10389120, 20778240]

約数ペア:

[(1, 20778240), (2, 10389120), (3, 6926080), (4, 5194560), (5, 4155648), (6, 3463040), (7, 2968320), (8, 2597280), (10, 2077824), (12, 1731520), (14, 1484160), (15, 1385216), (16, 1298640), (20, 1038912), (21, 989440), (24, 865760), (28, 742080), (30, 692608), (32, 649320), (35, 593664), (40, 519456), (42, 494720), (48, 432880), (56, 371040), (60, 346304), (64, 324660), (70, 296832), (80, 259728), (84, 247360), (96, 216440), (105, 197888), (112, 185520), (120, 173152), (128, 162330), (140, 148416), (160, 129864), (168, 123680), (192, 108220), (210, 98944), (224, 92760), (240, 86576), (256, 81165), (280, 74208), (320, 64932), (336, 61840), (384, 54110), (420, 49472), (448, 46380), (480, 43288), (560, 37104), (640, 32466), (672, 30920), (768, 27055), (773, 26880), (840, 24736), (896, 23190), (960, 21644), (1120, 18552), (1280, 16233), (1344, 15460), (1546, 13440), (1680, 12368), (1792, 11595), (1920, 10822), (2240, 9276), (2319, 8960), (2688, 7730), (3092, 6720), (3360, 6184), (3840, 5411), (3865, 5376), (4480, 4638)]