21628240

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{5101}}^1$

素因数の和:5167

約数の個数: 40

約数和(自身を含む): 51244488

約数和(自身を除く): 29616248

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 5101, 10202, 20404, 25505, 40808, 51010, 81616, 102020, 204040, 270353, 408080, 540706, 1081412, 1351765, 2162824, 2703530, 4325648, 5407060, 10814120, 21628240]

約数ペア:

[(1, 21628240), (2, 10814120), (4, 5407060), (5, 4325648), (8, 2703530), (10, 2162824), (16, 1351765), (20, 1081412), (40, 540706), (53, 408080), (80, 270353), (106, 204040), (212, 102020), (265, 81616), (424, 51010), (530, 40808), (848, 25505), (1060, 20404), (2120, 10202), (4240, 5101)]