19943553

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 32034816

約数和(自身を除く): 12091263

約数列:

[1, 3, 7, 21, 23, 69, 157, 161, 263, 471, 483, 789, 1099, 1841, 3297, 3611, 5523, 6049, 10833, 18147, 25277, 41291, 42343, 75831, 123873, 127029, 289037, 867111, 949693, 2849079, 6647851, 19943553]

約数ペア:

[(1, 19943553), (3, 6647851), (7, 2849079), (21, 949693), (23, 867111), (69, 289037), (157, 127029), (161, 123873), (263, 75831), (471, 42343), (483, 41291), (789, 25277), (1099, 18147), (1841, 10833), (3297, 6049), (3611, 5523)]