212755790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^2\times {\mathrm{131}}^1$

素因数の和:226

約数の個数: 72

約数和(自身を含む): 431764344

約数和(自身を除く): 219008554

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 131, 155, 169, 262, 310, 338, 403, 655, 806, 845, 961, 1310, 1690, 1703, 1922, 2015, 3406, 4030, 4061, 4805, 5239, 8122, 8515, 9610, 10478, 12493, 17030, 20305, 22139, 24986, 26195, 40610, 44278, 52390, 52793, 62465, 105586, 110695, 124930, 125891, 162409, 221390, 251782, 263965, 324818, 527930, 629455, 686309, 812045, 1258910, 1372618, 1624090, 1636583, 3273166, 3431545, 6863090, 8182915, 16365830, 21275579, 42551158, 106377895, 212755790]

約数ペア:

[(1, 212755790), (2, 106377895), (5, 42551158), (10, 21275579), (13, 16365830), (26, 8182915), (31, 6863090), (62, 3431545), (65, 3273166), (130, 1636583), (131, 1624090), (155, 1372618), (169, 1258910), (262, 812045), (310, 686309), (338, 629455), (403, 527930), (655, 324818), (806, 263965), (845, 251782), (961, 221390), (1310, 162409), (1690, 125891), (1703, 124930), (1922, 110695), (2015, 105586), (3406, 62465), (4030, 52793), (4061, 52390), (4805, 44278), (5239, 40610), (8122, 26195), (8515, 24986), (9610, 22139), (10478, 20305), (12493, 17030)]