261569320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{210943}}^1$

素因数の和:210985

約数の個数: 32

約数和(自身を含む): 607518720

約数和(自身を除く): 345949400

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 210943, 421886, 843772, 1054715, 1687544, 2109430, 4218860, 6539233, 8437720, 13078466, 26156932, 32696165, 52313864, 65392330, 130784660, 261569320]

約数ペア:

[(1, 261569320), (2, 130784660), (4, 65392330), (5, 52313864), (8, 32696165), (10, 26156932), (20, 13078466), (31, 8437720), (40, 6539233), (62, 4218860), (124, 2109430), (155, 1687544), (248, 1054715), (310, 843772), (620, 421886), (1240, 210943)]