21519900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{23911}}^1$

素因数の和:23931

約数の個数: 54

約数和(自身を含む): 67455752

約数和(自身を除く): 45935852

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, 23911, 47822, 71733, 95644, 119555, 143466, 215199, 239110, 286932, 358665, 430398, 478220, 597775, 717330, 860796, 1075995, 1195550, 1434660, 1793325, 2151990, 2391100, 3586650, 4303980, 5379975, 7173300, 10759950, 21519900]

約数ペア:

[(1, 21519900), (2, 10759950), (3, 7173300), (4, 5379975), (5, 4303980), (6, 3586650), (9, 2391100), (10, 2151990), (12, 1793325), (15, 1434660), (18, 1195550), (20, 1075995), (25, 860796), (30, 717330), (36, 597775), (45, 478220), (50, 430398), (60, 358665), (75, 286932), (90, 239110), (100, 215199), (150, 143466), (180, 119555), (225, 95644), (300, 71733), (450, 47822), (900, 23911)]