161709640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130411}}^1$

素因数の和:130453

約数の個数: 32

約数和(自身を含む): 375586560

約数和(自身を除く): 213876920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 130411, 260822, 521644, 652055, 1043288, 1304110, 2608220, 4042741, 5216440, 8085482, 16170964, 20213705, 32341928, 40427410, 80854820, 161709640]

約数ペア:

[(1, 161709640), (2, 80854820), (4, 40427410), (5, 32341928), (8, 20213705), (10, 16170964), (20, 8085482), (31, 5216440), (40, 4042741), (62, 2608220), (124, 1304110), (155, 1043288), (248, 652055), (310, 521644), (620, 260822), (1240, 130411)]