20891286

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{1223}}^1$

素因数の和:1317

約数の個数: 48

約数和(自身を含む): 49454496

約数和(自身を除く): 28563210

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 73, 78, 117, 146, 219, 234, 438, 657, 949, 1223, 1314, 1898, 2446, 2847, 3669, 5694, 7338, 8541, 11007, 15899, 17082, 22014, 31798, 47697, 89279, 95394, 143091, 178558, 267837, 286182, 535674, 803511, 1160627, 1607022, 2321254, 3481881, 6963762, 10445643, 20891286]

約数ペア:

[(1, 20891286), (2, 10445643), (3, 6963762), (6, 3481881), (9, 2321254), (13, 1607022), (18, 1160627), (26, 803511), (39, 535674), (73, 286182), (78, 267837), (117, 178558), (146, 143091), (219, 95394), (234, 89279), (438, 47697), (657, 31798), (949, 22014), (1223, 17082), (1314, 15899), (1898, 11007), (2446, 8541), (2847, 7338), (3669, 5694)]