256299925

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{1721}}^1$

素因数の和:1798

約数の個数: 48

約数和(自身を含む): 389475072

約数和(自身を除く): 133175147

約数列:

[1, 5, 7, 23, 25, 35, 37, 115, 161, 175, 185, 259, 575, 805, 851, 925, 1295, 1721, 4025, 4255, 5957, 6475, 8605, 12047, 21275, 29785, 39583, 43025, 60235, 63677, 148925, 197915, 277081, 301175, 318385, 445739, 989575, 1385405, 1464571, 1591925, 2228695, 6927025, 7322855, 10251997, 11143475, 36614275, 51259985, 256299925]

約数ペア:

[(1, 256299925), (5, 51259985), (7, 36614275), (23, 11143475), (25, 10251997), (35, 7322855), (37, 6927025), (115, 2228695), (161, 1591925), (175, 1464571), (185, 1385405), (259, 989575), (575, 445739), (805, 318385), (851, 301175), (925, 277081), (1295, 197915), (1721, 148925), (4025, 63677), (4255, 60235), (5957, 43025), (6475, 39583), (8605, 29785), (12047, 21275)]