20209215

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2801}}^1$

素因数の和:2859

約数の個数: 32

約数和(自身を含む): 35775936

約数和(自身を除く): 15566721

約数列:

[1, 3, 5, 13, 15, 37, 39, 65, 111, 185, 195, 481, 555, 1443, 2405, 2801, 7215, 8403, 14005, 36413, 42015, 103637, 109239, 182065, 310911, 518185, 546195, 1347281, 1554555, 4041843, 6736405, 20209215]

約数ペア:

[(1, 20209215), (3, 6736405), (5, 4041843), (13, 1554555), (15, 1347281), (37, 546195), (39, 518185), (65, 310911), (111, 182065), (185, 109239), (195, 103637), (481, 42015), (555, 36413), (1443, 14005), (2405, 8403), (2801, 7215)]