21471490

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{73}}^1\times {\mathrm{439}}^1$

素因数の和:586

約数の個数: 32

約数和(自身を含む): 39853440

約数和(自身を除く): 18381950

約数列:

[1, 2, 5, 10, 67, 73, 134, 146, 335, 365, 439, 670, 730, 878, 2195, 4390, 4891, 9782, 24455, 29413, 32047, 48910, 58826, 64094, 147065, 160235, 294130, 320470, 2147149, 4294298, 10735745, 21471490]

約数ペア:

[(1, 21471490), (2, 10735745), (5, 4294298), (10, 2147149), (67, 320470), (73, 294130), (134, 160235), (146, 147065), (335, 64094), (365, 58826), (439, 48910), (670, 32047), (730, 29413), (878, 24455), (2195, 9782), (4390, 4891)]