397777985

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{349}}^1$

素因数の和:458

約数の個数: 64

約数和(自身を含む): 587865600

約数和(自身を除く): 190087615

約数列:

[1, 5, 11, 17, 23, 53, 55, 85, 115, 187, 253, 265, 349, 391, 583, 901, 935, 1219, 1265, 1745, 1955, 2915, 3839, 4301, 4505, 5933, 6095, 8027, 9911, 13409, 18497, 19195, 20723, 21505, 29665, 40135, 49555, 65263, 67045, 88297, 92485, 103615, 136459, 203467, 227953, 314449, 326315, 425431, 441485, 682295, 1017335, 1139765, 1501049, 1572245, 2127155, 3458939, 4679741, 7232327, 7505245, 17294695, 23398705, 36161635, 79555597, 397777985]

約数ペア:

[(1, 397777985), (5, 79555597), (11, 36161635), (17, 23398705), (23, 17294695), (53, 7505245), (55, 7232327), (85, 4679741), (115, 3458939), (187, 2127155), (253, 1572245), (265, 1501049), (349, 1139765), (391, 1017335), (583, 682295), (901, 441485), (935, 425431), (1219, 326315), (1265, 314449), (1745, 227953), (1955, 203467), (2915, 136459), (3839, 103615), (4301, 92485), (4505, 88297), (5933, 67045), (6095, 65263), (8027, 49555), (9911, 40135), (13409, 29665), (18497, 21505), (19195, 20723)]