258303920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{461257}}^1$

素因数の和:461277

約数の個数: 40

約数和(自身を含む): 686351904

約数和(自身を除く): 428047984

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 461257, 922514, 1845028, 2306285, 3228799, 3690056, 4612570, 6457598, 7380112, 9225140, 12915196, 16143995, 18450280, 25830392, 32287990, 36900560, 51660784, 64575980, 129151960, 258303920]

約数ペア:

[(1, 258303920), (2, 129151960), (4, 64575980), (5, 51660784), (7, 36900560), (8, 32287990), (10, 25830392), (14, 18450280), (16, 16143995), (20, 12915196), (28, 9225140), (35, 7380112), (40, 6457598), (56, 4612570), (70, 3690056), (80, 3228799), (112, 2306285), (140, 1845028), (280, 922514), (560, 461257)]