289797560

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{557303}}^1$

素因数の和:557327

約数の個数: 32

約数和(自身を含む): 702203040

約数和(自身を除く): 412405480

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 557303, 1114606, 2229212, 2786515, 4458424, 5573030, 7244939, 11146060, 14489878, 22292120, 28979756, 36224695, 57959512, 72449390, 144898780, 289797560]

約数ペア:

[(1, 289797560), (2, 144898780), (4, 72449390), (5, 57959512), (8, 36224695), (10, 28979756), (13, 22292120), (20, 14489878), (26, 11146060), (40, 7244939), (52, 5573030), (65, 4458424), (104, 2786515), (130, 2229212), (260, 1114606), (520, 557303)]