28041013

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{257}}^1$

素因数の和:397

約数の個数: 32

約数和(自身を含む): 38142720

約数和(自身を除く): 10101707

約数列:

[1, 7, 11, 13, 77, 91, 109, 143, 257, 763, 1001, 1199, 1417, 1799, 2827, 3341, 8393, 9919, 15587, 19789, 23387, 28013, 36751, 109109, 196091, 257257, 308143, 364169, 2157001, 2549183, 4005859, 28041013]

約数ペア:

[(1, 28041013), (7, 4005859), (11, 2549183), (13, 2157001), (77, 364169), (91, 308143), (109, 257257), (143, 196091), (257, 109109), (763, 36751), (1001, 28013), (1199, 23387), (1417, 19789), (1799, 15587), (2827, 9919), (3341, 8393)]