20168064880

素因数分解:

$2^4\times 5^1\times {\mathrm{3989}}^1\times {\mathrm{63199}}^1$

素因数の和:67201

約数の個数: 40

約数和(自身を含む): 46903248000

約数和(自身を除く): 26735183120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 3989, 7978, 15956, 19945, 31912, 39890, 63199, 63824, 79780, 126398, 159560, 252796, 315995, 319120, 505592, 631990, 1011184, 1263980, 2527960, 5055920, 252100811, 504201622, 1008403244, 1260504055, 2016806488, 2521008110, 4033612976, 5042016220, 10084032440, 20168064880]

約数ペア:

[(1, 20168064880), (2, 10084032440), (4, 5042016220), (5, 4033612976), (8, 2521008110), (10, 2016806488), (16, 1260504055), (20, 1008403244), (40, 504201622), (80, 252100811), (3989, 5055920), (7978, 2527960), (15956, 1263980), (19945, 1011184), (31912, 631990), (39890, 505592), (63199, 319120), (63824, 315995), (79780, 252796), (126398, 159560)]