20997448

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{853}}^1$

素因数の和:1057

約数の個数: 32

約数和(自身を含む): 41965560

約数和(自身を除く): 20968112

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 181, 362, 724, 853, 1448, 1706, 3077, 3412, 6154, 6824, 12308, 14501, 24616, 29002, 58004, 116008, 154393, 308786, 617572, 1235144, 2624681, 5249362, 10498724, 20997448]

約数ペア:

[(1, 20997448), (2, 10498724), (4, 5249362), (8, 2624681), (17, 1235144), (34, 617572), (68, 308786), (136, 154393), (181, 116008), (362, 58004), (724, 29002), (853, 24616), (1448, 14501), (1706, 12308), (3077, 6824), (3412, 6154)]