287513720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{719}}^1\times {\mathrm{769}}^1$

素因数の和:1512

約数の個数: 64

約数和(自身を含む): 698544000

約数和(自身を除く): 411030280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 719, 769, 1438, 1538, 2876, 3076, 3595, 3845, 5752, 6152, 7190, 7690, 9347, 9997, 14380, 15380, 18694, 19994, 28760, 30760, 37388, 39988, 46735, 49985, 74776, 79976, 93470, 99970, 186940, 199940, 373880, 399880, 552911, 1105822, 2211644, 2764555, 4423288, 5529110, 7187843, 11058220, 14375686, 22116440, 28751372, 35939215, 57502744, 71878430, 143756860, 287513720]

約数ペア:

[(1, 287513720), (2, 143756860), (4, 71878430), (5, 57502744), (8, 35939215), (10, 28751372), (13, 22116440), (20, 14375686), (26, 11058220), (40, 7187843), (52, 5529110), (65, 4423288), (104, 2764555), (130, 2211644), (260, 1105822), (520, 552911), (719, 399880), (769, 373880), (1438, 199940), (1538, 186940), (2876, 99970), (3076, 93470), (3595, 79976), (3845, 74776), (5752, 49985), (6152, 46735), (7190, 39988), (7690, 37388), (9347, 30760), (9997, 28760), (14380, 19994), (15380, 18694)]