18815840

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5113}}^1$

素因数の和:5151

約数の個数: 48

約数和(自身を含む): 46394208

約数和(自身を除く): 27578368

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5113, 10226, 20452, 25565, 40904, 51130, 81808, 102260, 117599, 163616, 204520, 235198, 409040, 470396, 587995, 818080, 940792, 1175990, 1881584, 2351980, 3763168, 4703960, 9407920, 18815840]

約数ペア:

[(1, 18815840), (2, 9407920), (4, 4703960), (5, 3763168), (8, 2351980), (10, 1881584), (16, 1175990), (20, 940792), (23, 818080), (32, 587995), (40, 470396), (46, 409040), (80, 235198), (92, 204520), (115, 163616), (160, 117599), (184, 102260), (230, 81808), (368, 51130), (460, 40904), (736, 25565), (920, 20452), (1840, 10226), (3680, 5113)]