21517535

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1$

素因数の和:467

約数の個数: 32

約数和(自身を含む): 29877120

約数和(自身を除く): 8359585

約数列:

[1, 5, 13, 23, 37, 65, 115, 185, 299, 389, 481, 851, 1495, 1945, 2405, 4255, 5057, 8947, 11063, 14393, 25285, 44735, 55315, 71965, 116311, 187109, 331039, 581555, 935545, 1655195, 4303507, 21517535]

約数ペア:

[(1, 21517535), (5, 4303507), (13, 1655195), (23, 935545), (37, 581555), (65, 331039), (115, 187109), (185, 116311), (299, 71965), (389, 55315), (481, 44735), (851, 25285), (1495, 14393), (1945, 11063), (2405, 8947), (4255, 5057)]