21176205

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^1\times {\mathrm{83}}^1\times {\mathrm{233}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 34909056

約数和(自身を除く): 13732851

約数列:

[1, 3, 5, 15, 73, 83, 219, 233, 249, 365, 415, 699, 1095, 1165, 1245, 3495, 6059, 17009, 18177, 19339, 30295, 51027, 58017, 85045, 90885, 96695, 255135, 290085, 1411747, 4235241, 7058735, 21176205]

約数ペア:

[(1, 21176205), (3, 7058735), (5, 4235241), (15, 1411747), (73, 290085), (83, 255135), (219, 96695), (233, 90885), (249, 85045), (365, 58017), (415, 51027), (699, 30295), (1095, 19339), (1165, 18177), (1245, 17009), (3495, 6059)]