20438925

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20963}}^1$

素因数の和:20989

約数の個数: 24

約数和(自身を含む): 36393504

約数和(自身を除く): 15954579

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 20963, 62889, 104815, 272519, 314445, 524075, 817557, 1362595, 1572225, 4087785, 6812975, 20438925]

約数ペア:

[(1, 20438925), (3, 6812975), (5, 4087785), (13, 1572225), (15, 1362595), (25, 817557), (39, 524075), (65, 314445), (75, 272519), (195, 104815), (325, 62889), (975, 20963)]