21478578

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{773}}^1$

素因数の和:1210

約数の個数: 32

約数和(自身を含む): 47034432

約数和(自身を除く): 25555854

約数列:

[1, 2, 3, 6, 11, 22, 33, 66, 421, 773, 842, 1263, 1546, 2319, 2526, 4631, 4638, 8503, 9262, 13893, 17006, 25509, 27786, 51018, 325433, 650866, 976299, 1952598, 3579763, 7159526, 10739289, 21478578]

約数ペア:

[(1, 21478578), (2, 10739289), (3, 7159526), (6, 3579763), (11, 1952598), (22, 976299), (33, 650866), (66, 325433), (421, 51018), (773, 27786), (842, 25509), (1263, 17006), (1546, 13893), (2319, 9262), (2526, 8503), (4631, 4638)]