20775904

素因数分解:

$2^5\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{211}}^1$

素因数の和:419

約数の個数: 48

約数和(自身を含む): 43754256

約数和(自身を除く): 22978352

約数列:

[1, 2, 4, 8, 16, 17, 32, 34, 68, 136, 181, 211, 272, 362, 422, 544, 724, 844, 1448, 1688, 2896, 3077, 3376, 3587, 5792, 6154, 6752, 7174, 12308, 14348, 24616, 28696, 38191, 49232, 57392, 76382, 98464, 114784, 152764, 305528, 611056, 649247, 1222112, 1298494, 2596988, 5193976, 10387952, 20775904]

約数ペア:

[(1, 20775904), (2, 10387952), (4, 5193976), (8, 2596988), (16, 1298494), (17, 1222112), (32, 649247), (34, 611056), (68, 305528), (136, 152764), (181, 114784), (211, 98464), (272, 76382), (362, 57392), (422, 49232), (544, 38191), (724, 28696), (844, 24616), (1448, 14348), (1688, 12308), (2896, 7174), (3077, 6752), (3376, 6154), (3587, 5792)]