20390272

素因数分解:

$2^7\times 7^2\times {\mathrm{3251}}^1$

素因数の和:3279

約数の個数: 48

約数和(自身を含む): 47267820

約数和(自身を除く): 26877548

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 49, 56, 64, 98, 112, 128, 196, 224, 392, 448, 784, 896, 1568, 3136, 3251, 6272, 6502, 13004, 22757, 26008, 45514, 52016, 91028, 104032, 159299, 182056, 208064, 318598, 364112, 416128, 637196, 728224, 1274392, 1456448, 2548784, 2912896, 5097568, 10195136, 20390272]

約数ペア:

[(1, 20390272), (2, 10195136), (4, 5097568), (7, 2912896), (8, 2548784), (14, 1456448), (16, 1274392), (28, 728224), (32, 637196), (49, 416128), (56, 364112), (64, 318598), (98, 208064), (112, 182056), (128, 159299), (196, 104032), (224, 91028), (392, 52016), (448, 45514), (784, 26008), (896, 22757), (1568, 13004), (3136, 6502), (3251, 6272)]