64808800

素因数分解:

$2^5\times 5^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1$

素因数の和:261

約数の個数: 144

約数和(自身を含む): 184488192

約数和(自身を除く): 119679392

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 70, 71, 80, 100, 112, 140, 142, 160, 163, 175, 200, 224, 280, 284, 326, 350, 355, 400, 497, 560, 568, 652, 700, 710, 800, 815, 994, 1120, 1136, 1141, 1304, 1400, 1420, 1630, 1775, 1988, 2272, 2282, 2485, 2608, 2800, 2840, 3260, 3550, 3976, 4075, 4564, 4970, 5216, 5600, 5680, 5705, 6520, 7100, 7952, 8150, 9128, 9940, 11360, 11410, 11573, 12425, 13040, 14200, 15904, 16300, 18256, 19880, 22820, 23146, 24850, 26080, 28400, 28525, 32600, 36512, 39760, 45640, 46292, 49700, 56800, 57050, 57865, 65200, 79520, 81011, 91280, 92584, 99400, 114100, 115730, 130400, 162022, 182560, 185168, 198800, 228200, 231460, 289325, 324044, 370336, 397600, 405055, 456400, 462920, 578650, 648088, 810110, 912800, 925840, 1157300, 1296176, 1620220, 1851680, 2025275, 2314600, 2592352, 3240440, 4050550, 4629200, 6480880, 8101100, 9258400, 12961760, 16202200, 32404400, 64808800]

約数ペア:

[(1, 64808800), (2, 32404400), (4, 16202200), (5, 12961760), (7, 9258400), (8, 8101100), (10, 6480880), (14, 4629200), (16, 4050550), (20, 3240440), (25, 2592352), (28, 2314600), (32, 2025275), (35, 1851680), (40, 1620220), (50, 1296176), (56, 1157300), (70, 925840), (71, 912800), (80, 810110), (100, 648088), (112, 578650), (140, 462920), (142, 456400), (160, 405055), (163, 397600), (175, 370336), (200, 324044), (224, 289325), (280, 231460), (284, 228200), (326, 198800), (350, 185168), (355, 182560), (400, 162022), (497, 130400), (560, 115730), (568, 114100), (652, 99400), (700, 92584), (710, 91280), (800, 81011), (815, 79520), (994, 65200), (1120, 57865), (1136, 57050), (1141, 56800), (1304, 49700), (1400, 46292), (1420, 45640), (1630, 39760), (1775, 36512), (1988, 32600), (2272, 28525), (2282, 28400), (2485, 26080), (2608, 24850), (2800, 23146), (2840, 22820), (3260, 19880), (3550, 18256), (3976, 16300), (4075, 15904), (4564, 14200), (4970, 13040), (5216, 12425), (5600, 11573), (5680, 11410), (5705, 11360), (6520, 9940), (7100, 9128), (7952, 8150)]