204927280

素因数分解:

$2^4\times 5^1\times {\mathrm{197}}^1\times {\mathrm{13003}}^1$

素因数の和:13213

約数の個数: 40

約数和(自身を含む): 478911312

約数和(自身を除く): 273984032

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 197, 394, 788, 985, 1576, 1970, 3152, 3940, 7880, 13003, 15760, 26006, 52012, 65015, 104024, 130030, 208048, 260060, 520120, 1040240, 2561591, 5123182, 10246364, 12807955, 20492728, 25615910, 40985456, 51231820, 102463640, 204927280]

約数ペア:

[(1, 204927280), (2, 102463640), (4, 51231820), (5, 40985456), (8, 25615910), (10, 20492728), (16, 12807955), (20, 10246364), (40, 5123182), (80, 2561591), (197, 1040240), (394, 520120), (788, 260060), (985, 208048), (1576, 130030), (1970, 104024), (3152, 65015), (3940, 52012), (7880, 26006), (13003, 15760)]