19815999

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1181}}^1$

素因数の和:1255

約数の個数: 32

約数和(自身を含む): 32679936

約数和(自身を除く): 12863937

約数列:

[1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 1181, 2397, 3543, 5593, 8267, 16779, 20077, 24801, 55507, 60231, 140539, 166521, 388549, 421617, 943619, 1165647, 2830857, 6605333, 19815999]

約数ペア:

[(1, 19815999), (3, 6605333), (7, 2830857), (17, 1165647), (21, 943619), (47, 421617), (51, 388549), (119, 166521), (141, 140539), (329, 60231), (357, 55507), (799, 24801), (987, 20077), (1181, 16779), (2397, 8267), (3543, 5593)]