19995645

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1069}}^1$

素因数の和:1149

約数の個数: 32

約数和(自身を含む): 33897600

約数和(自身を除く): 13901955

約数列:

[1, 3, 5, 15, 29, 43, 87, 129, 145, 215, 435, 645, 1069, 1247, 3207, 3741, 5345, 6235, 16035, 18705, 31001, 45967, 93003, 137901, 155005, 229835, 465015, 689505, 1333043, 3999129, 6665215, 19995645]

約数ペア:

[(1, 19995645), (3, 6665215), (5, 3999129), (15, 1333043), (29, 689505), (43, 465015), (87, 229835), (129, 155005), (145, 137901), (215, 93003), (435, 45967), (645, 31001), (1069, 18705), (1247, 16035), (3207, 6235), (3741, 5345)]