21841875

素因数分解:

$3^2\times 5^4\times {\mathrm{11}}^1\times {\mathrm{353}}^1$

素因数の和:390

約数の個数: 60

約数和(自身を含む): 43129944

約数和(自身を除く): 21288069

約数列:

[1, 3, 5, 9, 11, 15, 25, 33, 45, 55, 75, 99, 125, 165, 225, 275, 353, 375, 495, 625, 825, 1059, 1125, 1375, 1765, 1875, 2475, 3177, 3883, 4125, 5295, 5625, 6875, 8825, 11649, 12375, 15885, 19415, 20625, 26475, 34947, 44125, 58245, 61875, 79425, 97075, 132375, 174735, 220625, 291225, 397125, 485375, 661875, 873675, 1456125, 1985625, 2426875, 4368375, 7280625, 21841875]

約数ペア:

[(1, 21841875), (3, 7280625), (5, 4368375), (9, 2426875), (11, 1985625), (15, 1456125), (25, 873675), (33, 661875), (45, 485375), (55, 397125), (75, 291225), (99, 220625), (125, 174735), (165, 132375), (225, 97075), (275, 79425), (353, 61875), (375, 58245), (495, 44125), (625, 34947), (825, 26475), (1059, 20625), (1125, 19415), (1375, 15885), (1765, 12375), (1875, 11649), (2475, 8825), (3177, 6875), (3883, 5625), (4125, 5295)]