1807820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:402

約数の個数: 48

約数和(自身を含む): 4468800

約数和(自身を除く): 2660980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 37, 70, 74, 140, 148, 185, 259, 349, 370, 518, 698, 740, 1036, 1295, 1396, 1745, 2443, 2590, 3490, 4886, 5180, 6980, 9772, 12215, 12913, 24430, 25826, 48860, 51652, 64565, 90391, 129130, 180782, 258260, 361564, 451955, 903910, 1807820]

約数ペア:

[(1, 1807820), (2, 903910), (4, 451955), (5, 361564), (7, 258260), (10, 180782), (14, 129130), (20, 90391), (28, 64565), (35, 51652), (37, 48860), (70, 25826), (74, 24430), (140, 12913), (148, 12215), (185, 9772), (259, 6980), (349, 5180), (370, 4886), (518, 3490), (698, 2590), (740, 2443), (1036, 1745), (1295, 1396)]