21050403

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1\times {\mathrm{239}}^1$

素因数の和:427

約数の個数: 32

約数和(自身を含む): 32762880

約数和(自身を除く): 11712477

約数列:

[1, 3, 11, 17, 33, 51, 157, 187, 239, 471, 561, 717, 1727, 2629, 2669, 4063, 5181, 7887, 8007, 12189, 29359, 37523, 44693, 88077, 112569, 134079, 412753, 637891, 1238259, 1913673, 7016801, 21050403]

約数ペア:

[(1, 21050403), (3, 7016801), (11, 1913673), (17, 1238259), (33, 637891), (51, 412753), (157, 134079), (187, 112569), (239, 88077), (471, 44693), (561, 37523), (717, 29359), (1727, 12189), (2629, 8007), (2669, 7887), (4063, 5181)]