291249920

素因数分解:

$2^8\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{761}}^1$

素因数の和:818

約数の個数: 144

約数和(自身を含む): 784994112

約数和(自身を除く): 493744192

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 128, 130, 160, 184, 208, 230, 256, 260, 299, 320, 368, 416, 460, 520, 598, 640, 736, 761, 832, 920, 1040, 1196, 1280, 1472, 1495, 1522, 1664, 1840, 2080, 2392, 2944, 2990, 3044, 3328, 3680, 3805, 4160, 4784, 5888, 5980, 6088, 7360, 7610, 8320, 9568, 9893, 11960, 12176, 14720, 15220, 16640, 17503, 19136, 19786, 23920, 24352, 29440, 30440, 35006, 38272, 39572, 47840, 48704, 49465, 60880, 70012, 76544, 79144, 87515, 95680, 97408, 98930, 121760, 140024, 158288, 175030, 191360, 194816, 197860, 227539, 243520, 280048, 316576, 350060, 382720, 395720, 455078, 487040, 560096, 633152, 700120, 791440, 910156, 974080, 1120192, 1137695, 1266304, 1400240, 1582880, 1820312, 2240384, 2275390, 2532608, 2800480, 3165760, 3640624, 4480768, 4550780, 5600960, 6331520, 7281248, 9101560, 11201920, 12663040, 14562496, 18203120, 22403840, 29124992, 36406240, 58249984, 72812480, 145624960, 291249920]

約数ペア:

[(1, 291249920), (2, 145624960), (4, 72812480), (5, 58249984), (8, 36406240), (10, 29124992), (13, 22403840), (16, 18203120), (20, 14562496), (23, 12663040), (26, 11201920), (32, 9101560), (40, 7281248), (46, 6331520), (52, 5600960), (64, 4550780), (65, 4480768), (80, 3640624), (92, 3165760), (104, 2800480), (115, 2532608), (128, 2275390), (130, 2240384), (160, 1820312), (184, 1582880), (208, 1400240), (230, 1266304), (256, 1137695), (260, 1120192), (299, 974080), (320, 910156), (368, 791440), (416, 700120), (460, 633152), (520, 560096), (598, 487040), (640, 455078), (736, 395720), (761, 382720), (832, 350060), (920, 316576), (1040, 280048), (1196, 243520), (1280, 227539), (1472, 197860), (1495, 194816), (1522, 191360), (1664, 175030), (1840, 158288), (2080, 140024), (2392, 121760), (2944, 98930), (2990, 97408), (3044, 95680), (3328, 87515), (3680, 79144), (3805, 76544), (4160, 70012), (4784, 60880), (5888, 49465), (5980, 48704), (6088, 47840), (7360, 39572), (7610, 38272), (8320, 35006), (9568, 30440), (9893, 29440), (11960, 24352), (12176, 23920), (14720, 19786), (15220, 19136), (16640, 17503)]