20424020

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16741}}^1$

素因数の和:16811

約数の個数: 24

約数和(自身を含む): 43596168

約数和(自身を除く): 23172148

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 16741, 33482, 66964, 83705, 167410, 334820, 1021201, 2042402, 4084804, 5106005, 10212010, 20424020]

約数ペア:

[(1, 20424020), (2, 10212010), (4, 5106005), (5, 4084804), (10, 2042402), (20, 1021201), (61, 334820), (122, 167410), (244, 83705), (305, 66964), (610, 33482), (1220, 16741)]