21509777793

素因数分解:

$3^1\times 7^2\times {\mathrm{659}}^1\times {\mathrm{222041}}^1$

素因数の和:222717

約数の個数: 24

約数和(自身を含む): 33412880160

約数和(自身を除く): 11903102367

約数列:

[1, 3, 7, 21, 49, 147, 659, 1977, 4613, 13839, 32291, 96873, 222041, 666123, 1554287, 4662861, 10880009, 32640027, 146325019, 438975057, 1024275133, 3072825399, 7169925931, 21509777793]

約数ペア:

[(1, 21509777793), (3, 7169925931), (7, 3072825399), (21, 1024275133), (49, 438975057), (147, 146325019), (659, 32640027), (1977, 10880009), (4613, 4662861), (13839, 1554287), (32291, 666123), (96873, 222041)]