19724649

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{739}}^1$

素因数の和:821

約数の個数: 32

約数和(自身を含む): 31825920

約数和(自身を除く): 12101271

約数列:

[1, 3, 7, 21, 31, 41, 93, 123, 217, 287, 651, 739, 861, 1271, 2217, 3813, 5173, 8897, 15519, 22909, 26691, 30299, 68727, 90897, 160363, 212093, 481089, 636279, 939269, 2817807, 6574883, 19724649]

約数ペア:

[(1, 19724649), (3, 6574883), (7, 2817807), (21, 939269), (31, 636279), (41, 481089), (93, 212093), (123, 160363), (217, 90897), (287, 68727), (651, 30299), (739, 26691), (861, 22909), (1271, 15519), (2217, 8897), (3813, 5173)]