178703980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^3\times {\mathrm{83}}^1$

素因数の和:145

約数の個数: 144

約数和(自身を含む): 478608480

約数和(自身を除く): 299904500

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 83, 91, 98, 130, 140, 166, 169, 182, 196, 245, 260, 332, 338, 364, 415, 455, 490, 581, 637, 676, 830, 845, 910, 980, 1079, 1162, 1183, 1274, 1660, 1690, 1820, 2158, 2197, 2324, 2366, 2548, 2905, 3185, 3380, 4067, 4316, 4394, 4732, 5395, 5810, 5915, 6370, 7553, 8134, 8281, 8788, 10790, 10985, 11620, 11830, 12740, 14027, 15106, 15379, 16268, 16562, 20335, 21580, 21970, 23660, 28054, 30212, 30758, 33124, 37765, 40670, 41405, 43940, 52871, 56108, 61516, 70135, 75530, 76895, 81340, 82810, 98189, 105742, 107653, 140270, 151060, 153790, 165620, 182351, 196378, 211484, 215306, 264355, 280540, 307580, 364702, 392756, 430612, 490945, 528710, 538265, 687323, 729404, 911755, 981890, 1057420, 1076530, 1276457, 1374646, 1823510, 1963780, 2153060, 2552914, 2749292, 3436615, 3647020, 5105828, 6382285, 6873230, 8935199, 12764570, 13746460, 17870398, 25529140, 35740796, 44675995, 89351990, 178703980]

約数ペア:

[(1, 178703980), (2, 89351990), (4, 44675995), (5, 35740796), (7, 25529140), (10, 17870398), (13, 13746460), (14, 12764570), (20, 8935199), (26, 6873230), (28, 6382285), (35, 5105828), (49, 3647020), (52, 3436615), (65, 2749292), (70, 2552914), (83, 2153060), (91, 1963780), (98, 1823510), (130, 1374646), (140, 1276457), (166, 1076530), (169, 1057420), (182, 981890), (196, 911755), (245, 729404), (260, 687323), (332, 538265), (338, 528710), (364, 490945), (415, 430612), (455, 392756), (490, 364702), (581, 307580), (637, 280540), (676, 264355), (830, 215306), (845, 211484), (910, 196378), (980, 182351), (1079, 165620), (1162, 153790), (1183, 151060), (1274, 140270), (1660, 107653), (1690, 105742), (1820, 98189), (2158, 82810), (2197, 81340), (2324, 76895), (2366, 75530), (2548, 70135), (2905, 61516), (3185, 56108), (3380, 52871), (4067, 43940), (4316, 41405), (4394, 40670), (4732, 37765), (5395, 33124), (5810, 30758), (5915, 30212), (6370, 28054), (7553, 23660), (8134, 21970), (8281, 21580), (8788, 20335), (10790, 16562), (10985, 16268), (11620, 15379), (11830, 15106), (12740, 14027)]