19516988

素因数分解:

$2^2\times {\mathrm{73}}^1\times {\mathrm{89}}^1\times {\mathrm{751}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 35058240

約数和(自身を除く): 15541252

約数列:

[1, 2, 4, 73, 89, 146, 178, 292, 356, 751, 1502, 3004, 6497, 12994, 25988, 54823, 66839, 109646, 133678, 219292, 267356, 4879247, 9758494, 19516988]

約数ペア:

[(1, 19516988), (2, 9758494), (4, 4879247), (73, 267356), (89, 219292), (146, 133678), (178, 109646), (292, 66839), (356, 54823), (751, 25988), (1502, 12994), (3004, 6497)]