20798925

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{229}}^1$

素因数の和:422

約数の個数: 48

約数和(自身を含む): 39699840

約数和(自身を除く): 18900915

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 173, 175, 229, 519, 525, 687, 865, 1145, 1211, 1603, 2595, 3435, 3633, 4325, 4809, 5725, 6055, 8015, 12975, 17175, 18165, 24045, 30275, 39617, 40075, 90825, 118851, 120225, 198085, 277319, 594255, 831957, 990425, 1386595, 2971275, 4159785, 6932975, 20798925]

約数ペア:

[(1, 20798925), (3, 6932975), (5, 4159785), (7, 2971275), (15, 1386595), (21, 990425), (25, 831957), (35, 594255), (75, 277319), (105, 198085), (173, 120225), (175, 118851), (229, 90825), (519, 40075), (525, 39617), (687, 30275), (865, 24045), (1145, 18165), (1211, 17175), (1603, 12975), (2595, 8015), (3435, 6055), (3633, 5725), (4325, 4809)]