21891532

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{73}}^2\times {\mathrm{79}}^1$

素因数の和:242

約数の個数: 36

約数和(自身を含む): 42359520

約数和(自身を除く): 20467988

約数列:

[1, 2, 4, 13, 26, 52, 73, 79, 146, 158, 292, 316, 949, 1027, 1898, 2054, 3796, 4108, 5329, 5767, 10658, 11534, 21316, 23068, 69277, 74971, 138554, 149942, 277108, 299884, 420991, 841982, 1683964, 5472883, 10945766, 21891532]

約数ペア:

[(1, 21891532), (2, 10945766), (4, 5472883), (13, 1683964), (26, 841982), (52, 420991), (73, 299884), (79, 277108), (146, 149942), (158, 138554), (292, 74971), (316, 69277), (949, 23068), (1027, 21316), (1898, 11534), (2054, 10658), (3796, 5767), (4108, 5329)]