245481340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{947}}^1\times {\mathrm{997}}^1$

素因数の和:1966

約数の個数: 48

約数和(自身を含む): 556309152

約数和(自身を除く): 310827812

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 947, 997, 1894, 1994, 3788, 3988, 4735, 4985, 9470, 9970, 12311, 12961, 18940, 19940, 24622, 25922, 49244, 51844, 61555, 64805, 123110, 129610, 246220, 259220, 944159, 1888318, 3776636, 4720795, 9441590, 12274067, 18883180, 24548134, 49096268, 61370335, 122740670, 245481340]

約数ペア:

[(1, 245481340), (2, 122740670), (4, 61370335), (5, 49096268), (10, 24548134), (13, 18883180), (20, 12274067), (26, 9441590), (52, 4720795), (65, 3776636), (130, 1888318), (260, 944159), (947, 259220), (997, 246220), (1894, 129610), (1994, 123110), (3788, 64805), (3988, 61555), (4735, 51844), (4985, 49244), (9470, 25922), (9970, 24622), (12311, 19940), (12961, 18940)]