21173750

素因数分解:

$2^1\times 5^4\times {\mathrm{13}}^1\times {\mathrm{1303}}^1$

素因数の和:1338

約数の個数: 40

約数和(自身を含む): 42773808

約数和(自身を除く): 21600058

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 125, 130, 250, 325, 625, 650, 1250, 1303, 1625, 2606, 3250, 6515, 8125, 13030, 16250, 16939, 32575, 33878, 65150, 84695, 162875, 169390, 325750, 423475, 814375, 846950, 1628750, 2117375, 4234750, 10586875, 21173750]

約数ペア:

[(1, 21173750), (2, 10586875), (5, 4234750), (10, 2117375), (13, 1628750), (25, 846950), (26, 814375), (50, 423475), (65, 325750), (125, 169390), (130, 162875), (250, 84695), (325, 65150), (625, 33878), (650, 32575), (1250, 16939), (1303, 16250), (1625, 13030), (2606, 8125), (3250, 6515)]