20817900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{23131}}^1$

素因数の和:23151

約数の個数: 54

約数和(自身を含む): 65255372

約数和(自身を除く): 44437472

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, 900, 23131, 46262, 69393, 92524, 115655, 138786, 208179, 231310, 277572, 346965, 416358, 462620, 578275, 693930, 832716, 1040895, 1156550, 1387860, 1734825, 2081790, 2313100, 3469650, 4163580, 5204475, 6939300, 10408950, 20817900]

約数ペア:

[(1, 20817900), (2, 10408950), (3, 6939300), (4, 5204475), (5, 4163580), (6, 3469650), (9, 2313100), (10, 2081790), (12, 1734825), (15, 1387860), (18, 1156550), (20, 1040895), (25, 832716), (30, 693930), (36, 578275), (45, 462620), (50, 416358), (60, 346965), (75, 277572), (90, 231310), (100, 208179), (150, 138786), (180, 115655), (225, 92524), (300, 69393), (450, 46262), (900, 23131)]