19865768

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2851}}^1$

素因数の和:2937

約数の個数: 32

約数和(自身を含む): 40726560

約数和(自身を除く): 20860792

約数列:

[1, 2, 4, 8, 13, 26, 52, 67, 104, 134, 268, 536, 871, 1742, 2851, 3484, 5702, 6968, 11404, 22808, 37063, 74126, 148252, 191017, 296504, 382034, 764068, 1528136, 2483221, 4966442, 9932884, 19865768]

約数ペア:

[(1, 19865768), (2, 9932884), (4, 4966442), (8, 2483221), (13, 1528136), (26, 764068), (52, 382034), (67, 296504), (104, 191017), (134, 148252), (268, 74126), (536, 37063), (871, 22808), (1742, 11404), (2851, 6968), (3484, 5702)]