209470945

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:345

約数の個数: 32

約数和(自身を含む): 264695040

約数和(自身を除く): 55224095

約数列:

[1, 5, 59, 71, 73, 137, 295, 355, 365, 685, 4189, 4307, 5183, 8083, 9727, 10001, 20945, 21535, 25915, 40415, 48635, 50005, 305797, 573893, 590059, 710071, 1528985, 2869465, 2950295, 3550355, 41894189, 209470945]

約数ペア:

[(1, 209470945), (5, 41894189), (59, 3550355), (71, 2950295), (73, 2869465), (137, 1528985), (295, 710071), (355, 590059), (365, 573893), (685, 305797), (4189, 50005), (4307, 48635), (5183, 40415), (8083, 25915), (9727, 21535), (10001, 20945)]