20646180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{4987}}^1$

素因数の和:5025

約数の個数: 72

約数和(自身を含む): 65362752

約数和(自身を除く): 44716572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 4987, 9974, 14961, 19948, 24935, 29922, 44883, 49870, 59844, 74805, 89766, 99740, 114701, 149610, 179532, 224415, 229402, 299220, 344103, 448830, 458804, 573505, 688206, 897660, 1032309, 1147010, 1376412, 1720515, 2064618, 2294020, 3441030, 4129236, 5161545, 6882060, 10323090, 20646180]

約数ペア:

[(1, 20646180), (2, 10323090), (3, 6882060), (4, 5161545), (5, 4129236), (6, 3441030), (9, 2294020), (10, 2064618), (12, 1720515), (15, 1376412), (18, 1147010), (20, 1032309), (23, 897660), (30, 688206), (36, 573505), (45, 458804), (46, 448830), (60, 344103), (69, 299220), (90, 229402), (92, 224415), (115, 179532), (138, 149610), (180, 114701), (207, 99740), (230, 89766), (276, 74805), (345, 59844), (414, 49870), (460, 44883), (690, 29922), (828, 24935), (1035, 19948), (1380, 14961), (2070, 9974), (4140, 4987)]