261560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 635040

約数和(自身を除く): 373480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 503, 520, 1006, 2012, 2515, 4024, 5030, 6539, 10060, 13078, 20120, 26156, 32695, 52312, 65390, 130780, 261560]

約数ペア:

[(1, 261560), (2, 130780), (4, 65390), (5, 52312), (8, 32695), (10, 26156), (13, 20120), (20, 13078), (26, 10060), (40, 6539), (52, 5030), (65, 4024), (104, 2515), (130, 2012), (260, 1006), (503, 520)]