28348840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{54517}}^1$

素因数の和:54541

約数の個数: 32

約数和(自身を含む): 68692680

約数和(自身を除く): 40343840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 54517, 109034, 218068, 272585, 436136, 545170, 708721, 1090340, 1417442, 2180680, 2834884, 3543605, 5669768, 7087210, 14174420, 28348840]

約数ペア:

[(1, 28348840), (2, 14174420), (4, 7087210), (5, 5669768), (8, 3543605), (10, 2834884), (13, 2180680), (20, 1417442), (26, 1090340), (40, 708721), (52, 545170), (65, 436136), (104, 272585), (130, 218068), (260, 109034), (520, 54517)]