8876980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{389}}^1$

素因数の和:568

約数の個数: 48

約数和(自身を含む): 21490560

約数和(自身を除く): 12613580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 163, 326, 389, 652, 778, 815, 1141, 1556, 1630, 1945, 2282, 2723, 3260, 3890, 4564, 5446, 5705, 7780, 10892, 11410, 13615, 22820, 27230, 54460, 63407, 126814, 253628, 317035, 443849, 634070, 887698, 1268140, 1775396, 2219245, 4438490, 8876980]

約数ペア:

[(1, 8876980), (2, 4438490), (4, 2219245), (5, 1775396), (7, 1268140), (10, 887698), (14, 634070), (20, 443849), (28, 317035), (35, 253628), (70, 126814), (140, 63407), (163, 54460), (326, 27230), (389, 22820), (652, 13615), (778, 11410), (815, 10892), (1141, 7780), (1556, 5705), (1630, 5446), (1945, 4564), (2282, 3890), (2723, 3260)]