21909685

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{1601}}^1$

素因数の和:1653

約数の個数: 32

約数和(自身を含む): 33219072

約数和(自身を除く): 11309387

約数列:

[1, 5, 7, 17, 23, 35, 85, 115, 119, 161, 391, 595, 805, 1601, 1955, 2737, 8005, 11207, 13685, 27217, 36823, 56035, 136085, 184115, 190519, 257761, 625991, 952595, 1288805, 3129955, 4381937, 21909685]

約数ペア:

[(1, 21909685), (5, 4381937), (7, 3129955), (17, 1288805), (23, 952595), (35, 625991), (85, 257761), (115, 190519), (119, 184115), (161, 136085), (391, 56035), (595, 36823), (805, 27217), (1601, 13685), (1955, 11207), (2737, 8005)]