161017720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{129853}}^1$

素因数の和:129895

約数の個数: 32

約数和(自身を含む): 373979520

約数和(自身を除く): 212961800

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 129853, 259706, 519412, 649265, 1038824, 1298530, 2597060, 4025443, 5194120, 8050886, 16101772, 20127215, 32203544, 40254430, 80508860, 161017720]

約数ペア:

[(1, 161017720), (2, 80508860), (4, 40254430), (5, 32203544), (8, 20127215), (10, 16101772), (20, 8050886), (31, 5194120), (40, 4025443), (62, 2597060), (124, 1298530), (155, 1038824), (248, 649265), (310, 519412), (620, 259706), (1240, 129853)]