251745520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1$

素因数の和:563

約数の個数: 160

約数和(自身を含む): 691830720

約数和(自身を除く): 440085200

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 29, 34, 40, 52, 58, 65, 68, 80, 85, 104, 116, 130, 136, 145, 170, 208, 221, 232, 260, 272, 290, 340, 377, 442, 464, 491, 493, 520, 580, 680, 754, 884, 982, 986, 1040, 1105, 1160, 1360, 1508, 1768, 1885, 1964, 1972, 2210, 2320, 2455, 2465, 3016, 3536, 3770, 3928, 3944, 4420, 4910, 4930, 6032, 6383, 6409, 7540, 7856, 7888, 8347, 8840, 9820, 9860, 12766, 12818, 14239, 15080, 16694, 17680, 19640, 19720, 25532, 25636, 28478, 30160, 31915, 32045, 33388, 39280, 39440, 41735, 51064, 51272, 56956, 63830, 64090, 66776, 71195, 83470, 102128, 102544, 108511, 113912, 127660, 128180, 133552, 142390, 166940, 185107, 217022, 227824, 242063, 255320, 256360, 284780, 333880, 370214, 434044, 484126, 510640, 512720, 542555, 569560, 667760, 740428, 868088, 925535, 968252, 1085110, 1139120, 1210315, 1480856, 1736176, 1851070, 1936504, 2170220, 2420630, 2961712, 3146819, 3702140, 3873008, 4340440, 4841260, 6293638, 7404280, 8680880, 9682520, 12587276, 14808560, 15734095, 19365040, 25174552, 31468190, 50349104, 62936380, 125872760, 251745520]

約数ペア:

[(1, 251745520), (2, 125872760), (4, 62936380), (5, 50349104), (8, 31468190), (10, 25174552), (13, 19365040), (16, 15734095), (17, 14808560), (20, 12587276), (26, 9682520), (29, 8680880), (34, 7404280), (40, 6293638), (52, 4841260), (58, 4340440), (65, 3873008), (68, 3702140), (80, 3146819), (85, 2961712), (104, 2420630), (116, 2170220), (130, 1936504), (136, 1851070), (145, 1736176), (170, 1480856), (208, 1210315), (221, 1139120), (232, 1085110), (260, 968252), (272, 925535), (290, 868088), (340, 740428), (377, 667760), (442, 569560), (464, 542555), (491, 512720), (493, 510640), (520, 484126), (580, 434044), (680, 370214), (754, 333880), (884, 284780), (982, 256360), (986, 255320), (1040, 242063), (1105, 227824), (1160, 217022), (1360, 185107), (1508, 166940), (1768, 142390), (1885, 133552), (1964, 128180), (1972, 127660), (2210, 113912), (2320, 108511), (2455, 102544), (2465, 102128), (3016, 83470), (3536, 71195), (3770, 66776), (3928, 64090), (3944, 63830), (4420, 56956), (4910, 51272), (4930, 51064), (6032, 41735), (6383, 39440), (6409, 39280), (7540, 33388), (7856, 32045), (7888, 31915), (8347, 30160), (8840, 28478), (9820, 25636), (9860, 25532), (12766, 19720), (12818, 19640), (14239, 17680), (15080, 16694)]