25438840

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{12979}}^1$

素因数の和:13004

約数の個数: 48

約数和(自身を含む): 66587400

約数和(自身を除く): 41148560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 12979, 25958, 51916, 64895, 90853, 103832, 129790, 181706, 259580, 363412, 454265, 519160, 635971, 726824, 908530, 1271942, 1817060, 2543884, 3179855, 3634120, 5087768, 6359710, 12719420, 25438840]

約数ペア:

[(1, 25438840), (2, 12719420), (4, 6359710), (5, 5087768), (7, 3634120), (8, 3179855), (10, 2543884), (14, 1817060), (20, 1271942), (28, 908530), (35, 726824), (40, 635971), (49, 519160), (56, 454265), (70, 363412), (98, 259580), (140, 181706), (196, 129790), (245, 103832), (280, 90853), (392, 64895), (490, 51916), (980, 25958), (1960, 12979)]