28760420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 66898944

約数和(自身を除く): 38138524

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 67, 127, 130, 134, 169, 254, 260, 268, 335, 338, 508, 635, 670, 676, 845, 871, 1270, 1340, 1651, 1690, 1742, 2540, 3302, 3380, 3484, 4355, 6604, 8255, 8509, 8710, 11323, 16510, 17018, 17420, 21463, 22646, 33020, 34036, 42545, 42926, 45292, 56615, 85090, 85852, 107315, 110617, 113230, 170180, 214630, 221234, 226460, 429260, 442468, 553085, 1106170, 1438021, 2212340, 2876042, 5752084, 7190105, 14380210, 28760420]

約数ペア:

[(1, 28760420), (2, 14380210), (4, 7190105), (5, 5752084), (10, 2876042), (13, 2212340), (20, 1438021), (26, 1106170), (52, 553085), (65, 442468), (67, 429260), (127, 226460), (130, 221234), (134, 214630), (169, 170180), (254, 113230), (260, 110617), (268, 107315), (335, 85852), (338, 85090), (508, 56615), (635, 45292), (670, 42926), (676, 42545), (845, 34036), (871, 33020), (1270, 22646), (1340, 21463), (1651, 17420), (1690, 17018), (1742, 16510), (2540, 11323), (3302, 8710), (3380, 8509), (3484, 8255), (4355, 6604)]