20362040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{16421}}^1$

素因数の和:16463

約数の個数: 32

約数和(自身を含む): 47295360

約数和(自身を除く): 26933320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 16421, 32842, 65684, 82105, 131368, 164210, 328420, 509051, 656840, 1018102, 2036204, 2545255, 4072408, 5090510, 10181020, 20362040]

約数ペア:

[(1, 20362040), (2, 10181020), (4, 5090510), (5, 4072408), (8, 2545255), (10, 2036204), (20, 1018102), (31, 656840), (40, 509051), (62, 328420), (124, 164210), (155, 131368), (248, 82105), (310, 65684), (620, 32842), (1240, 16421)]