20193808

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{367}}^1$

素因数の和:575

約数の個数: 40

約数和(自身を含む): 41525120

約数和(自身を除く): 21331312

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 181, 304, 362, 367, 724, 734, 1448, 1468, 2896, 2936, 3439, 5872, 6878, 6973, 13756, 13946, 27512, 27892, 55024, 55784, 66427, 111568, 132854, 265708, 531416, 1062832, 1262113, 2524226, 5048452, 10096904, 20193808]

約数ペア:

[(1, 20193808), (2, 10096904), (4, 5048452), (8, 2524226), (16, 1262113), (19, 1062832), (38, 531416), (76, 265708), (152, 132854), (181, 111568), (304, 66427), (362, 55784), (367, 55024), (724, 27892), (734, 27512), (1448, 13946), (1468, 13756), (2896, 6973), (2936, 6878), (3439, 5872)]