21238515

素因数分解:

$3^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{5303}}^1$

素因数の和:5403

約数の個数: 24

約数和(自身を含む): 37234080

約数和(自身を除く): 15995565

約数列:

[1, 3, 5, 9, 15, 45, 89, 267, 445, 801, 1335, 4005, 5303, 15909, 26515, 47727, 79545, 238635, 471967, 1415901, 2359835, 4247703, 7079505, 21238515]

約数ペア:

[(1, 21238515), (3, 7079505), (5, 4247703), (9, 2359835), (15, 1415901), (45, 471967), (89, 238635), (267, 79545), (445, 47727), (801, 26515), (1335, 15909), (4005, 5303)]