291681520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{280463}}^1$

素因数の和:280489

約数の個数: 40

約数和(自身を含む): 730328256

約数和(自身を除く): 438646736

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 280463, 560926, 1121852, 1402315, 2243704, 2804630, 3646019, 4487408, 5609260, 7292038, 11218520, 14584076, 18230095, 22437040, 29168152, 36460190, 58336304, 72920380, 145840760, 291681520]

約数ペア:

[(1, 291681520), (2, 145840760), (4, 72920380), (5, 58336304), (8, 36460190), (10, 29168152), (13, 22437040), (16, 18230095), (20, 14584076), (26, 11218520), (40, 7292038), (52, 5609260), (65, 4487408), (80, 3646019), (104, 2804630), (130, 2243704), (208, 1402315), (260, 1121852), (520, 560926), (1040, 280463)]