20921576

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{5437}}^1$

素因数の和:5493

約数の個数: 32

約数和(自身を含む): 43395240

約数和(自身を除く): 22473664

約数列:

[1, 2, 4, 8, 13, 26, 37, 52, 74, 104, 148, 296, 481, 962, 1924, 3848, 5437, 10874, 21748, 43496, 70681, 141362, 201169, 282724, 402338, 565448, 804676, 1609352, 2615197, 5230394, 10460788, 20921576]

約数ペア:

[(1, 20921576), (2, 10460788), (4, 5230394), (8, 2615197), (13, 1609352), (26, 804676), (37, 565448), (52, 402338), (74, 282724), (104, 201169), (148, 141362), (296, 70681), (481, 43496), (962, 21748), (1924, 10874), (3848, 5437)]