80180090

素因数分解:

$2^1\times 5^1\times {\mathrm{2003}}^1\times {\mathrm{4003}}^1$

素因数の和:6013

約数の個数: 16

約数和(自身を含む): 144432288

約数和(自身を除く): 64252198

約数列:

[1, 2, 5, 10, 2003, 4003, 4006, 8006, 10015, 20015, 20030, 40030, 8018009, 16036018, 40090045, 80180090]

約数ペア:

[(1, 80180090), (2, 40090045), (5, 16036018), (10, 8018009), (2003, 40030), (4003, 20030), (4006, 20015), (8006, 10015)]