78774280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:351

約数の個数: 96

約数和(自身を含む): 197112960

約数和(自身を除く): 118338680

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 169, 172, 215, 260, 271, 338, 344, 430, 520, 542, 559, 676, 845, 860, 1084, 1118, 1352, 1355, 1690, 1720, 2168, 2236, 2710, 2795, 3380, 3523, 4472, 5420, 5590, 6760, 7046, 7267, 10840, 11180, 11653, 14092, 14534, 17615, 22360, 23306, 28184, 29068, 35230, 36335, 45799, 46612, 58136, 58265, 70460, 72670, 91598, 93224, 116530, 140920, 145340, 151489, 183196, 228995, 233060, 290680, 302978, 366392, 457990, 466120, 605956, 757445, 915980, 1211912, 1514890, 1831960, 1969357, 3029780, 3938714, 6059560, 7877428, 9846785, 15754856, 19693570, 39387140, 78774280]

約数ペア:

[(1, 78774280), (2, 39387140), (4, 19693570), (5, 15754856), (8, 9846785), (10, 7877428), (13, 6059560), (20, 3938714), (26, 3029780), (40, 1969357), (43, 1831960), (52, 1514890), (65, 1211912), (86, 915980), (104, 757445), (130, 605956), (169, 466120), (172, 457990), (215, 366392), (260, 302978), (271, 290680), (338, 233060), (344, 228995), (430, 183196), (520, 151489), (542, 145340), (559, 140920), (676, 116530), (845, 93224), (860, 91598), (1084, 72670), (1118, 70460), (1352, 58265), (1355, 58136), (1690, 46612), (1720, 45799), (2168, 36335), (2236, 35230), (2710, 29068), (2795, 28184), (3380, 23306), (3523, 22360), (4472, 17615), (5420, 14534), (5590, 14092), (6760, 11653), (7046, 11180), (7267, 10840)]