19897773

素因数分解:

$3^1\times 7^3\times {\mathrm{61}}^1\times {\mathrm{317}}^1$

素因数の和:402

約数の個数: 32

約数和(自身を含む): 31545600

約数和(自身を除く): 11647827

約数列:

[1, 3, 7, 21, 49, 61, 147, 183, 317, 343, 427, 951, 1029, 1281, 2219, 2989, 6657, 8967, 15533, 19337, 20923, 46599, 58011, 62769, 108731, 135359, 326193, 406077, 947513, 2842539, 6632591, 19897773]

約数ペア:

[(1, 19897773), (3, 6632591), (7, 2842539), (21, 947513), (49, 406077), (61, 326193), (147, 135359), (183, 108731), (317, 62769), (343, 58011), (427, 46599), (951, 20923), (1029, 19337), (1281, 15533), (2219, 8967), (2989, 6657)]