28705276

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{103}}^1\times {\mathrm{193}}^1$

素因数の和:338

約数の個数: 36

約数和(自身を含む): 53809392

約数和(自身を除く): 25104116

約数列:

[1, 2, 4, 19, 38, 76, 103, 193, 206, 361, 386, 412, 722, 772, 1444, 1957, 3667, 3914, 7334, 7828, 14668, 19879, 37183, 39758, 69673, 74366, 79516, 139346, 148732, 278692, 377701, 755402, 1510804, 7176319, 14352638, 28705276]

約数ペア:

[(1, 28705276), (2, 14352638), (4, 7176319), (19, 1510804), (38, 755402), (76, 377701), (103, 278692), (193, 148732), (206, 139346), (361, 79516), (386, 74366), (412, 69673), (722, 39758), (772, 37183), (1444, 19879), (1957, 14668), (3667, 7828), (3914, 7334)]