2891120

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{509}}^1$

素因数の和:593

約数の個数: 40

約数和(自身を含む): 6829920

約数和(自身を除く): 3938800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 509, 568, 710, 1018, 1136, 1420, 2036, 2545, 2840, 4072, 5090, 5680, 8144, 10180, 20360, 36139, 40720, 72278, 144556, 180695, 289112, 361390, 578224, 722780, 1445560, 2891120]

約数ペア:

[(1, 2891120), (2, 1445560), (4, 722780), (5, 578224), (8, 361390), (10, 289112), (16, 180695), (20, 144556), (40, 72278), (71, 40720), (80, 36139), (142, 20360), (284, 10180), (355, 8144), (509, 5680), (568, 5090), (710, 4072), (1018, 2840), (1136, 2545), (1420, 2036)]