81721018

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{179}}^1$

素因数の和:366

約数の個数: 32

約数和(自身を含む): 129470400

約数和(自身を除く): 47749382

約数列:

[1, 2, 53, 59, 73, 106, 118, 146, 179, 358, 3127, 3869, 4307, 6254, 7738, 8614, 9487, 10561, 13067, 18974, 21122, 26134, 228271, 456542, 559733, 692551, 770953, 1119466, 1385102, 1541906, 40860509, 81721018]

約数ペア:

[(1, 81721018), (2, 40860509), (53, 1541906), (59, 1385102), (73, 1119466), (106, 770953), (118, 692551), (146, 559733), (179, 456542), (358, 228271), (3127, 26134), (3869, 21122), (4307, 18974), (6254, 13067), (7738, 10561), (8614, 9487)]