21305807800

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{1500409}}^1$

素因数の和:1500496

約数の個数: 48

約数和(自身を含む): 50233726800

約数和(自身を除く): 28927919000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 1420, 1775, 2840, 3550, 7100, 14200, 1500409, 3000818, 6001636, 7502045, 12003272, 15004090, 30008180, 37510225, 60016360, 75020450, 106529039, 150040900, 213058078, 300081800, 426116156, 532645195, 852232312, 1065290390, 2130580780, 2663225975, 4261161560, 5326451950, 10652903900, 21305807800]

約数ペア:

[(1, 21305807800), (2, 10652903900), (4, 5326451950), (5, 4261161560), (8, 2663225975), (10, 2130580780), (20, 1065290390), (25, 852232312), (40, 532645195), (50, 426116156), (71, 300081800), (100, 213058078), (142, 150040900), (200, 106529039), (284, 75020450), (355, 60016360), (568, 37510225), (710, 30008180), (1420, 15004090), (1775, 12003272), (2840, 7502045), (3550, 6001636), (7100, 3000818), (14200, 1500409)]