78407840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:239

約数の個数: 144

約数和(自身を含む): 220027752

約数和(自身を除く): 141619912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 73, 80, 98, 112, 137, 140, 146, 160, 196, 224, 245, 274, 280, 292, 365, 392, 490, 511, 548, 560, 584, 685, 730, 784, 959, 980, 1022, 1096, 1120, 1168, 1370, 1460, 1568, 1918, 1960, 2044, 2192, 2336, 2555, 2740, 2920, 3577, 3836, 3920, 4088, 4384, 4795, 5110, 5480, 5840, 6713, 7154, 7672, 7840, 8176, 9590, 10001, 10220, 10960, 11680, 13426, 14308, 15344, 16352, 17885, 19180, 20002, 20440, 21920, 26852, 28616, 30688, 33565, 35770, 38360, 40004, 40880, 50005, 53704, 57232, 67130, 70007, 71540, 76720, 80008, 81760, 100010, 107408, 114464, 134260, 140014, 143080, 153440, 160016, 200020, 214816, 268520, 280028, 286160, 320032, 350035, 400040, 490049, 537040, 560056, 572320, 700070, 800080, 980098, 1074080, 1120112, 1400140, 1600160, 1960196, 2240224, 2450245, 2800280, 3920392, 4900490, 5600560, 7840784, 9800980, 11201120, 15681568, 19601960, 39203920, 78407840]

約数ペア:

[(1, 78407840), (2, 39203920), (4, 19601960), (5, 15681568), (7, 11201120), (8, 9800980), (10, 7840784), (14, 5600560), (16, 4900490), (20, 3920392), (28, 2800280), (32, 2450245), (35, 2240224), (40, 1960196), (49, 1600160), (56, 1400140), (70, 1120112), (73, 1074080), (80, 980098), (98, 800080), (112, 700070), (137, 572320), (140, 560056), (146, 537040), (160, 490049), (196, 400040), (224, 350035), (245, 320032), (274, 286160), (280, 280028), (292, 268520), (365, 214816), (392, 200020), (490, 160016), (511, 153440), (548, 143080), (560, 140014), (584, 134260), (685, 114464), (730, 107408), (784, 100010), (959, 81760), (980, 80008), (1022, 76720), (1096, 71540), (1120, 70007), (1168, 67130), (1370, 57232), (1460, 53704), (1568, 50005), (1918, 40880), (1960, 40004), (2044, 38360), (2192, 35770), (2336, 33565), (2555, 30688), (2740, 28616), (2920, 26852), (3577, 21920), (3836, 20440), (3920, 20002), (4088, 19180), (4384, 17885), (4795, 16352), (5110, 15344), (5480, 14308), (5840, 13426), (6713, 11680), (7154, 10960), (7672, 10220), (7840, 10001), (8176, 9590)]