209213212

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{197}}^1\times {\mathrm{1571}}^1$

素因数の和:1798

約数の個数: 36

約数和(自身を含む): 398718936

約数和(自身を除く): 189505724

約数列:

[1, 2, 4, 13, 26, 52, 169, 197, 338, 394, 676, 788, 1571, 2561, 3142, 5122, 6284, 10244, 20423, 33293, 40846, 66586, 81692, 133172, 265499, 309487, 530998, 618974, 1061996, 1237948, 4023331, 8046662, 16093324, 52303303, 104606606, 209213212]

約数ペア:

[(1, 209213212), (2, 104606606), (4, 52303303), (13, 16093324), (26, 8046662), (52, 4023331), (169, 1237948), (197, 1061996), (338, 618974), (394, 530998), (676, 309487), (788, 265499), (1571, 133172), (2561, 81692), (3142, 66586), (5122, 40846), (6284, 33293), (10244, 20423)]