20211793904

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{811}}^1\times {\mathrm{67723}}^1$

素因数の和:68565

約数の個数: 40

約数和(自身を含む): 40913964672

約数和(自身を除く): 20702170768

約数列:

[1, 2, 4, 8, 16, 23, 46, 92, 184, 368, 811, 1622, 3244, 6488, 12976, 18653, 37306, 67723, 74612, 135446, 149224, 270892, 298448, 541784, 1083568, 1557629, 3115258, 6230516, 12461032, 24922064, 54923353, 109846706, 219693412, 439386824, 878773648, 1263237119, 2526474238, 5052948476, 10105896952, 20211793904]

約数ペア:

[(1, 20211793904), (2, 10105896952), (4, 5052948476), (8, 2526474238), (16, 1263237119), (23, 878773648), (46, 439386824), (92, 219693412), (184, 109846706), (368, 54923353), (811, 24922064), (1622, 12461032), (3244, 6230516), (6488, 3115258), (12976, 1557629), (18653, 1083568), (37306, 541784), (67723, 298448), (74612, 270892), (135446, 149224)]