20257812

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{419}}^1$

素因数の和:525

約数の個数: 72

約数和(自身を含む): 55036800

約数和(自身を除く): 34778988

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 34, 36, 51, 68, 79, 102, 153, 158, 204, 237, 306, 316, 419, 474, 612, 711, 838, 948, 1257, 1343, 1422, 1676, 2514, 2686, 2844, 3771, 4029, 5028, 5372, 7123, 7542, 8058, 12087, 14246, 15084, 16116, 21369, 24174, 28492, 33101, 42738, 48348, 64107, 66202, 85476, 99303, 128214, 132404, 198606, 256428, 297909, 397212, 562717, 595818, 1125434, 1191636, 1688151, 2250868, 3376302, 5064453, 6752604, 10128906, 20257812]

約数ペア:

[(1, 20257812), (2, 10128906), (3, 6752604), (4, 5064453), (6, 3376302), (9, 2250868), (12, 1688151), (17, 1191636), (18, 1125434), (34, 595818), (36, 562717), (51, 397212), (68, 297909), (79, 256428), (102, 198606), (153, 132404), (158, 128214), (204, 99303), (237, 85476), (306, 66202), (316, 64107), (419, 48348), (474, 42738), (612, 33101), (711, 28492), (838, 24174), (948, 21369), (1257, 16116), (1343, 15084), (1422, 14246), (1676, 12087), (2514, 8058), (2686, 7542), (2844, 7123), (3771, 5372), (4029, 5028)]