20876085

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{941}}^1$

素因数の和:998

約数の個数: 48

約数和(自身を含む): 39677040

約数和(自身を除く): 18800955

約数列:

[1, 3, 5, 9, 15, 17, 29, 45, 51, 85, 87, 145, 153, 255, 261, 435, 493, 765, 941, 1305, 1479, 2465, 2823, 4437, 4705, 7395, 8469, 14115, 15997, 22185, 27289, 42345, 47991, 79985, 81867, 136445, 143973, 239955, 245601, 409335, 463913, 719865, 1228005, 1391739, 2319565, 4175217, 6958695, 20876085]

約数ペア:

[(1, 20876085), (3, 6958695), (5, 4175217), (9, 2319565), (15, 1391739), (17, 1228005), (29, 719865), (45, 463913), (51, 409335), (85, 245601), (87, 239955), (145, 143973), (153, 136445), (255, 81867), (261, 79985), (435, 47991), (493, 42345), (765, 27289), (941, 22185), (1305, 15997), (1479, 14115), (2465, 8469), (2823, 7395), (4437, 4705)]