20487896

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17909}}^1$

素因数の和:17939

約数の個数: 32

約数和(自身を含む): 45133200

約数和(自身を除く): 24645304

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 17909, 35818, 71636, 143272, 196999, 232817, 393998, 465634, 787996, 931268, 1575992, 1862536, 2560987, 5121974, 10243948, 20487896]

約数ペア:

[(1, 20487896), (2, 10243948), (4, 5121974), (8, 2560987), (11, 1862536), (13, 1575992), (22, 931268), (26, 787996), (44, 465634), (52, 393998), (88, 232817), (104, 196999), (143, 143272), (286, 71636), (572, 35818), (1144, 17909)]