20090871560

素因数分解:

$2^3\times 5^1\times {\mathrm{121351}}^1\times {\mathrm{4139}}^1$

素因数の和:125501

約数の個数: 32

約数和(自身を含む): 45215755200

約数和(自身を除く): 25124883640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4139, 8278, 16556, 20695, 33112, 41390, 82780, 121351, 165560, 242702, 485404, 606755, 970808, 1213510, 2427020, 4854040, 502271789, 1004543578, 2009087156, 2511358945, 4018174312, 5022717890, 10045435780, 20090871560]

約数ペア:

[(1, 20090871560), (2, 10045435780), (4, 5022717890), (5, 4018174312), (8, 2511358945), (10, 2009087156), (20, 1004543578), (40, 502271789), (4139, 4854040), (8278, 2427020), (16556, 1213510), (20695, 970808), (33112, 606755), (41390, 485404), (82780, 242702), (121351, 165560)]