161765720

素因数分解:

$2^3\times 5^1\times {\mathrm{449}}^1\times {\mathrm{9007}}^1$

素因数の和:9467

約数の個数: 32

約数和(自身を含む): 364824000

約数和(自身を除く): 203058280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 449, 898, 1796, 2245, 3592, 4490, 8980, 9007, 17960, 18014, 36028, 45035, 72056, 90070, 180140, 360280, 4044143, 8088286, 16176572, 20220715, 32353144, 40441430, 80882860, 161765720]

約数ペア:

[(1, 161765720), (2, 80882860), (4, 40441430), (5, 32353144), (8, 20220715), (10, 16176572), (20, 8088286), (40, 4044143), (449, 360280), (898, 180140), (1796, 90070), (2245, 72056), (3592, 45035), (4490, 36028), (8980, 18014), (9007, 17960)]