19998472

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{6203}}^1$

素因数の和:6253

約数の個数: 32

約数和(自身を含む): 41690880

約数和(自身を除く): 21692408

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 248, 403, 806, 1612, 3224, 6203, 12406, 24812, 49624, 80639, 161278, 192293, 322556, 384586, 645112, 769172, 1538344, 2499809, 4999618, 9999236, 19998472]

約数ペア:

[(1, 19998472), (2, 9999236), (4, 4999618), (8, 2499809), (13, 1538344), (26, 769172), (31, 645112), (52, 384586), (62, 322556), (104, 192293), (124, 161278), (248, 80639), (403, 49624), (806, 24812), (1612, 12406), (3224, 6203)]