20741500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3191}}^1$

素因数の和:3223

約数の個数: 48

約数和(自身を含む): 48799296

約数和(自身を除く): 28057796

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3191, 3250, 6382, 6500, 12764, 15955, 31910, 41483, 63820, 79775, 82966, 159550, 165932, 207415, 319100, 398875, 414830, 797750, 829660, 1037075, 1595500, 2074150, 4148300, 5185375, 10370750, 20741500]

約数ペア:

[(1, 20741500), (2, 10370750), (4, 5185375), (5, 4148300), (10, 2074150), (13, 1595500), (20, 1037075), (25, 829660), (26, 797750), (50, 414830), (52, 398875), (65, 319100), (100, 207415), (125, 165932), (130, 159550), (250, 82966), (260, 79775), (325, 63820), (500, 41483), (650, 31910), (1300, 15955), (1625, 12764), (3191, 6500), (3250, 6382)]