720202220

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{4337}}^1$

素因数の和:4407

約数の個数: 72

約数和(自身を含む): 1666000224

約数和(自身を除く): 945798004

約数列:

[1, 2, 4, 5, 10, 19, 20, 23, 38, 46, 76, 92, 95, 115, 190, 230, 361, 380, 437, 460, 722, 874, 1444, 1748, 1805, 2185, 3610, 4337, 4370, 7220, 8303, 8674, 8740, 16606, 17348, 21685, 33212, 41515, 43370, 82403, 83030, 86740, 99751, 164806, 166060, 199502, 329612, 399004, 412015, 498755, 824030, 997510, 1565657, 1648060, 1895269, 1995020, 3131314, 3790538, 6262628, 7581076, 7828285, 9476345, 15656570, 18952690, 31313140, 36010111, 37905380, 72020222, 144040444, 180050555, 360101110, 720202220]

約数ペア:

[(1, 720202220), (2, 360101110), (4, 180050555), (5, 144040444), (10, 72020222), (19, 37905380), (20, 36010111), (23, 31313140), (38, 18952690), (46, 15656570), (76, 9476345), (92, 7828285), (95, 7581076), (115, 6262628), (190, 3790538), (230, 3131314), (361, 1995020), (380, 1895269), (437, 1648060), (460, 1565657), (722, 997510), (874, 824030), (1444, 498755), (1748, 412015), (1805, 399004), (2185, 329612), (3610, 199502), (4337, 166060), (4370, 164806), (7220, 99751), (8303, 86740), (8674, 83030), (8740, 82403), (16606, 43370), (17348, 41515), (21685, 33212)]