20193440

素因数分解:

$2^5\times 5^1\times {\mathrm{61}}^1\times {\mathrm{2069}}^1$

素因数の和:2145

約数の個数: 48

約数和(自身を含む): 48512520

約数和(自身を除く): 28319080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 80, 122, 160, 244, 305, 488, 610, 976, 1220, 1952, 2069, 2440, 4138, 4880, 8276, 9760, 10345, 16552, 20690, 33104, 41380, 66208, 82760, 126209, 165520, 252418, 331040, 504836, 631045, 1009672, 1262090, 2019344, 2524180, 4038688, 5048360, 10096720, 20193440]

約数ペア:

[(1, 20193440), (2, 10096720), (4, 5048360), (5, 4038688), (8, 2524180), (10, 2019344), (16, 1262090), (20, 1009672), (32, 631045), (40, 504836), (61, 331040), (80, 252418), (122, 165520), (160, 126209), (244, 82760), (305, 66208), (488, 41380), (610, 33104), (976, 20690), (1220, 16552), (1952, 10345), (2069, 9760), (2440, 8276), (4138, 4880)]