21921315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1423}}^1$

素因数の和:1523

約数の個数: 32

約数和(自身を含む): 38277120

約数和(自身を除く): 16355805

約数列:

[1, 3, 5, 13, 15, 39, 65, 79, 195, 237, 395, 1027, 1185, 1423, 3081, 4269, 5135, 7115, 15405, 18499, 21345, 55497, 92495, 112417, 277485, 337251, 562085, 1461421, 1686255, 4384263, 7307105, 21921315]

約数ペア:

[(1, 21921315), (3, 7307105), (5, 4384263), (13, 1686255), (15, 1461421), (39, 562085), (65, 337251), (79, 277485), (195, 112417), (237, 92495), (395, 55497), (1027, 21345), (1185, 18499), (1423, 15405), (3081, 7115), (4269, 5135)]