21443955

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{277}}^1\times {\mathrm{397}}^1$

素因数の和:695

約数の個数: 32

約数和(自身を含む): 37176384

約数和(自身を除く): 15732429

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 277, 397, 831, 1191, 1385, 1985, 3601, 4155, 5161, 5955, 10803, 15483, 18005, 25805, 54015, 77415, 109969, 329907, 549845, 1429597, 1649535, 4288791, 7147985, 21443955]

約数ペア:

[(1, 21443955), (3, 7147985), (5, 4288791), (13, 1649535), (15, 1429597), (39, 549845), (65, 329907), (195, 109969), (277, 77415), (397, 54015), (831, 25805), (1191, 18005), (1385, 15483), (1985, 10803), (3601, 5955), (4155, 5161)]