20286990

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{227}}^1\times {\mathrm{331}}^1$

素因数の和:574

約数の個数: 64

約数和(自身を含む): 54501120

約数和(自身を除く): 34214130

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 227, 270, 331, 454, 662, 681, 993, 1135, 1362, 1655, 1986, 2043, 2270, 2979, 3310, 3405, 4086, 4965, 5958, 6129, 6810, 8937, 9930, 10215, 12258, 14895, 17874, 20430, 29790, 30645, 44685, 61290, 75137, 89370, 150274, 225411, 375685, 450822, 676233, 751370, 1127055, 1352466, 2028699, 2254110, 3381165, 4057398, 6762330, 10143495, 20286990]

約数ペア:

[(1, 20286990), (2, 10143495), (3, 6762330), (5, 4057398), (6, 3381165), (9, 2254110), (10, 2028699), (15, 1352466), (18, 1127055), (27, 751370), (30, 676233), (45, 450822), (54, 375685), (90, 225411), (135, 150274), (227, 89370), (270, 75137), (331, 61290), (454, 44685), (662, 30645), (681, 29790), (993, 20430), (1135, 17874), (1362, 14895), (1655, 12258), (1986, 10215), (2043, 9930), (2270, 8937), (2979, 6810), (3310, 6129), (3405, 5958), (4086, 4965)]