19790120

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{439}}^1$

素因数の和:487

約数の個数: 96

約数和(自身を含む): 54172800

約数和(自身を除く): 34382680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 49, 56, 70, 92, 98, 115, 140, 161, 184, 196, 230, 245, 280, 322, 392, 439, 460, 490, 644, 805, 878, 920, 980, 1127, 1288, 1610, 1756, 1960, 2195, 2254, 3073, 3220, 3512, 4390, 4508, 5635, 6146, 6440, 8780, 9016, 10097, 11270, 12292, 15365, 17560, 20194, 21511, 22540, 24584, 30730, 40388, 43022, 45080, 50485, 61460, 70679, 80776, 86044, 100970, 107555, 122920, 141358, 172088, 201940, 215110, 282716, 353395, 403880, 430220, 494753, 565432, 706790, 860440, 989506, 1413580, 1979012, 2473765, 2827160, 3958024, 4947530, 9895060, 19790120]

約数ペア:

[(1, 19790120), (2, 9895060), (4, 4947530), (5, 3958024), (7, 2827160), (8, 2473765), (10, 1979012), (14, 1413580), (20, 989506), (23, 860440), (28, 706790), (35, 565432), (40, 494753), (46, 430220), (49, 403880), (56, 353395), (70, 282716), (92, 215110), (98, 201940), (115, 172088), (140, 141358), (161, 122920), (184, 107555), (196, 100970), (230, 86044), (245, 80776), (280, 70679), (322, 61460), (392, 50485), (439, 45080), (460, 43022), (490, 40388), (644, 30730), (805, 24584), (878, 22540), (920, 21511), (980, 20194), (1127, 17560), (1288, 15365), (1610, 12292), (1756, 11270), (1960, 10097), (2195, 9016), (2254, 8780), (3073, 6440), (3220, 6146), (3512, 5635), (4390, 4508)]