71991400

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{27689}}^1$

素因数の和:27718

約数の個数: 48

約数和(自身を含む): 180261900

約数和(自身を除く): 108270500

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 27689, 55378, 110756, 138445, 221512, 276890, 359957, 553780, 692225, 719914, 1107560, 1384450, 1439828, 1799785, 2768900, 2879656, 3599570, 5537800, 7199140, 8998925, 14398280, 17997850, 35995700, 71991400]

約数ペア:

[(1, 71991400), (2, 35995700), (4, 17997850), (5, 14398280), (8, 8998925), (10, 7199140), (13, 5537800), (20, 3599570), (25, 2879656), (26, 2768900), (40, 1799785), (50, 1439828), (52, 1384450), (65, 1107560), (100, 719914), (104, 692225), (130, 553780), (200, 359957), (260, 276890), (325, 221512), (520, 138445), (650, 110756), (1300, 55378), (2600, 27689)]