87978140

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{60259}}^1$

素因数の和:60341

約数の個数: 24

約数和(自身を含む): 187288080

約数和(自身を除く): 99309940

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 60259, 120518, 241036, 301295, 602590, 1205180, 4398907, 8797814, 17595628, 21994535, 43989070, 87978140]

約数ペア:

[(1, 87978140), (2, 43989070), (4, 21994535), (5, 17595628), (10, 8797814), (20, 4398907), (73, 1205180), (146, 602590), (292, 301295), (365, 241036), (730, 120518), (1460, 60259)]