18378100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{211}}^1$

素因数の和:305

約数の個数: 72

約数和(自身を含む): 43795808

約数和(自身を除く): 25417708

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 67, 100, 130, 134, 211, 260, 268, 325, 335, 422, 650, 670, 844, 871, 1055, 1300, 1340, 1675, 1742, 2110, 2743, 3350, 3484, 4220, 4355, 5275, 5486, 6700, 8710, 10550, 10972, 13715, 14137, 17420, 21100, 21775, 27430, 28274, 43550, 54860, 56548, 68575, 70685, 87100, 137150, 141370, 183781, 274300, 282740, 353425, 367562, 706850, 735124, 918905, 1413700, 1837810, 3675620, 4594525, 9189050, 18378100]

約数ペア:

[(1, 18378100), (2, 9189050), (4, 4594525), (5, 3675620), (10, 1837810), (13, 1413700), (20, 918905), (25, 735124), (26, 706850), (50, 367562), (52, 353425), (65, 282740), (67, 274300), (100, 183781), (130, 141370), (134, 137150), (211, 87100), (260, 70685), (268, 68575), (325, 56548), (335, 54860), (422, 43550), (650, 28274), (670, 27430), (844, 21775), (871, 21100), (1055, 17420), (1300, 14137), (1340, 13715), (1675, 10972), (1742, 10550), (2110, 8710), (2743, 6700), (3350, 5486), (3484, 5275), (4220, 4355)]