20478015

素因数分解:

$3^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{857}}^1$

素因数の和:933

約数の個数: 40

約数和(自身を含む): 37374480

約数和(自身を除く): 16896465

約数列:

[1, 3, 5, 9, 15, 27, 45, 59, 81, 135, 177, 295, 405, 531, 857, 885, 1593, 2571, 2655, 4285, 4779, 7713, 7965, 12855, 23139, 23895, 38565, 50563, 69417, 115695, 151689, 252815, 347085, 455067, 758445, 1365201, 2275335, 4095603, 6826005, 20478015]

約数ペア:

[(1, 20478015), (3, 6826005), (5, 4095603), (9, 2275335), (15, 1365201), (27, 758445), (45, 455067), (59, 347085), (81, 252815), (135, 151689), (177, 115695), (295, 69417), (405, 50563), (531, 38565), (857, 23895), (885, 23139), (1593, 12855), (2571, 7965), (2655, 7713), (4285, 4779)]