20282025

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{331}}^1$

素因数の和:406

約数の個数: 48

約数和(自身を含む): 36227840

約数和(自身を除く): 15945815

約数列:

[1, 3, 5, 15, 19, 25, 43, 57, 75, 95, 129, 215, 285, 331, 475, 645, 817, 993, 1075, 1425, 1655, 2451, 3225, 4085, 4965, 6289, 8275, 12255, 14233, 18867, 20425, 24825, 31445, 42699, 61275, 71165, 94335, 157225, 213495, 270427, 355825, 471675, 811281, 1067475, 1352135, 4056405, 6760675, 20282025]

約数ペア:

[(1, 20282025), (3, 6760675), (5, 4056405), (15, 1352135), (19, 1067475), (25, 811281), (43, 471675), (57, 355825), (75, 270427), (95, 213495), (129, 157225), (215, 94335), (285, 71165), (331, 61275), (475, 42699), (645, 31445), (817, 24825), (993, 20425), (1075, 18867), (1425, 14233), (1655, 12255), (2451, 8275), (3225, 6289), (4085, 4965)]