28765660

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{18679}}^1$

素因数の和:18706

約数の個数: 48

約数和(自身を含む): 75317760

約数和(自身を除く): 46552100

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 18679, 37358, 74716, 93395, 130753, 186790, 205469, 261506, 373580, 410938, 523012, 653765, 821876, 1027345, 1307530, 1438283, 2054690, 2615060, 2876566, 4109380, 5753132, 7191415, 14382830, 28765660]

約数ペア:

[(1, 28765660), (2, 14382830), (4, 7191415), (5, 5753132), (7, 4109380), (10, 2876566), (11, 2615060), (14, 2054690), (20, 1438283), (22, 1307530), (28, 1027345), (35, 821876), (44, 653765), (55, 523012), (70, 410938), (77, 373580), (110, 261506), (140, 205469), (154, 186790), (220, 130753), (308, 93395), (385, 74716), (770, 37358), (1540, 18679)]