28107460

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{229}}^1$

素因数の和:293

約数の個数: 72

約数和(自身を含む): 66248280

約数和(自身を除く): 38140820

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 170, 190, 229, 323, 340, 361, 380, 458, 646, 722, 916, 1145, 1292, 1444, 1615, 1805, 2290, 3230, 3610, 3893, 4351, 4580, 6137, 6460, 7220, 7786, 8702, 12274, 15572, 17404, 19465, 21755, 24548, 30685, 38930, 43510, 61370, 73967, 77860, 82669, 87020, 122740, 147934, 165338, 295868, 330676, 369835, 413345, 739670, 826690, 1405373, 1479340, 1653380, 2810746, 5621492, 7026865, 14053730, 28107460]

約数ペア:

[(1, 28107460), (2, 14053730), (4, 7026865), (5, 5621492), (10, 2810746), (17, 1653380), (19, 1479340), (20, 1405373), (34, 826690), (38, 739670), (68, 413345), (76, 369835), (85, 330676), (95, 295868), (170, 165338), (190, 147934), (229, 122740), (323, 87020), (340, 82669), (361, 77860), (380, 73967), (458, 61370), (646, 43510), (722, 38930), (916, 30685), (1145, 24548), (1292, 21755), (1444, 19465), (1615, 17404), (1805, 15572), (2290, 12274), (3230, 8702), (3610, 7786), (3893, 7220), (4351, 6460), (4580, 6137)]