8505140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{769}}^1$

素因数の和:864

約数の個数: 48

約数和(自身を含む): 20697600

約数和(自身を除く): 12192460

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 79, 140, 158, 316, 395, 553, 769, 790, 1106, 1538, 1580, 2212, 2765, 3076, 3845, 5383, 5530, 7690, 10766, 11060, 15380, 21532, 26915, 53830, 60751, 107660, 121502, 243004, 303755, 425257, 607510, 850514, 1215020, 1701028, 2126285, 4252570, 8505140]

約数ペア:

[(1, 8505140), (2, 4252570), (4, 2126285), (5, 1701028), (7, 1215020), (10, 850514), (14, 607510), (20, 425257), (28, 303755), (35, 243004), (70, 121502), (79, 107660), (140, 60751), (158, 53830), (316, 26915), (395, 21532), (553, 15380), (769, 11060), (790, 10766), (1106, 7690), (1538, 5530), (1580, 5383), (2212, 3845), (2765, 3076)]