19924960

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{11321}}^1$

素因数の和:11347

約数の個数: 48

約数和(自身を含む): 51356592

約数和(自身を除く): 31431632

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 11321, 22642, 45284, 56605, 90568, 113210, 124531, 181136, 226420, 249062, 362272, 452840, 498124, 622655, 905680, 996248, 1245310, 1811360, 1992496, 2490620, 3984992, 4981240, 9962480, 19924960]

約数ペア:

[(1, 19924960), (2, 9962480), (4, 4981240), (5, 3984992), (8, 2490620), (10, 1992496), (11, 1811360), (16, 1245310), (20, 996248), (22, 905680), (32, 622655), (40, 498124), (44, 452840), (55, 362272), (80, 249062), (88, 226420), (110, 181136), (160, 124531), (176, 113210), (220, 90568), (352, 56605), (440, 45284), (880, 22642), (1760, 11321)]