66851320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{40763}}^1$

素因数の和:40815

約数の個数: 32

約数和(自身を含む): 154087920

約数和(自身を除く): 87236600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 40763, 81526, 163052, 203815, 326104, 407630, 815260, 1630520, 1671283, 3342566, 6685132, 8356415, 13370264, 16712830, 33425660, 66851320]

約数ペア:

[(1, 66851320), (2, 33425660), (4, 16712830), (5, 13370264), (8, 8356415), (10, 6685132), (20, 3342566), (40, 1671283), (41, 1630520), (82, 815260), (164, 407630), (205, 326104), (328, 203815), (410, 163052), (820, 81526), (1640, 40763)]