87400520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{389}}^1$

素因数の和:578

約数の個数: 64

約数和(自身を含む): 203439600

約数和(自身を除く): 116039080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 137, 164, 205, 274, 328, 389, 410, 548, 685, 778, 820, 1096, 1370, 1556, 1640, 1945, 2740, 3112, 3890, 5480, 5617, 7780, 11234, 15560, 15949, 22468, 28085, 31898, 44936, 53293, 56170, 63796, 79745, 106586, 112340, 127592, 159490, 213172, 224680, 266465, 318980, 426344, 532930, 637960, 1065860, 2131720, 2185013, 4370026, 8740052, 10925065, 17480104, 21850130, 43700260, 87400520]

約数ペア:

[(1, 87400520), (2, 43700260), (4, 21850130), (5, 17480104), (8, 10925065), (10, 8740052), (20, 4370026), (40, 2185013), (41, 2131720), (82, 1065860), (137, 637960), (164, 532930), (205, 426344), (274, 318980), (328, 266465), (389, 224680), (410, 213172), (548, 159490), (685, 127592), (778, 112340), (820, 106586), (1096, 79745), (1370, 63796), (1556, 56170), (1640, 53293), (1945, 44936), (2740, 31898), (3112, 28085), (3890, 22468), (5480, 15949), (5617, 15560), (7780, 11234)]