20556404

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{367}}^1$

素因数の和:468

約数の個数: 48

約数和(自身を含む): 42040320

約数和(自身を除く): 21483916

約数列:

[1, 2, 4, 11, 19, 22, 38, 44, 67, 76, 134, 209, 268, 367, 418, 734, 737, 836, 1273, 1468, 1474, 2546, 2948, 4037, 5092, 6973, 8074, 13946, 14003, 16148, 24589, 27892, 28006, 49178, 56012, 76703, 98356, 153406, 270479, 306812, 467191, 540958, 934382, 1081916, 1868764, 5139101, 10278202, 20556404]

約数ペア:

[(1, 20556404), (2, 10278202), (4, 5139101), (11, 1868764), (19, 1081916), (22, 934382), (38, 540958), (44, 467191), (67, 306812), (76, 270479), (134, 153406), (209, 98356), (268, 76703), (367, 56012), (418, 49178), (734, 28006), (737, 27892), (836, 24589), (1273, 16148), (1468, 14003), (1474, 13946), (2546, 8074), (2948, 6973), (4037, 5092)]