28348720

素因数分解:

$2^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{3251}}^1$

素因数の和:3373

約数の個数: 40

約数和(自身を含む): 66535920

約数和(自身を除く): 38187200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 109, 218, 436, 545, 872, 1090, 1744, 2180, 3251, 4360, 6502, 8720, 13004, 16255, 26008, 32510, 52016, 65020, 130040, 260080, 354359, 708718, 1417436, 1771795, 2834872, 3543590, 5669744, 7087180, 14174360, 28348720]

約数ペア:

[(1, 28348720), (2, 14174360), (4, 7087180), (5, 5669744), (8, 3543590), (10, 2834872), (16, 1771795), (20, 1417436), (40, 708718), (80, 354359), (109, 260080), (218, 130040), (436, 65020), (545, 52016), (872, 32510), (1090, 26008), (1744, 16255), (2180, 13004), (3251, 8720), (4360, 6502)]