18180970

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{883}}^1$

素因数の和:990

約数の個数: 32

約数和(自身を含む): 34369920

約数和(自身を除く): 16188950

約数列:

[1, 2, 5, 10, 29, 58, 71, 142, 145, 290, 355, 710, 883, 1766, 2059, 4118, 4415, 8830, 10295, 20590, 25607, 51214, 62693, 125386, 128035, 256070, 313465, 626930, 1818097, 3636194, 9090485, 18180970]

約数ペア:

[(1, 18180970), (2, 9090485), (5, 3636194), (10, 1818097), (29, 626930), (58, 313465), (71, 256070), (142, 128035), (145, 125386), (290, 62693), (355, 51214), (710, 25607), (883, 20590), (1766, 10295), (2059, 8830), (4118, 4415)]