209301560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{402503}}^1$

素因数の和:402527

約数の個数: 32

約数和(自身を含む): 507155040

約数和(自身を除く): 297853480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 402503, 805006, 1610012, 2012515, 3220024, 4025030, 5232539, 8050060, 10465078, 16100120, 20930156, 26162695, 41860312, 52325390, 104650780, 209301560]

約数ペア:

[(1, 209301560), (2, 104650780), (4, 52325390), (5, 41860312), (8, 26162695), (10, 20930156), (13, 16100120), (20, 10465078), (26, 8050060), (40, 5232539), (52, 4025030), (65, 3220024), (104, 2012515), (130, 1610012), (260, 805006), (520, 402503)]