19861660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1559}}^1$

素因数の和:1595

約数の個数: 72

約数和(自身を含む): 52284960

約数和(自身を除く): 32423300

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1559, 1820, 2548, 3118, 3185, 6236, 6370, 7795, 10913, 12740, 15590, 20267, 21826, 31180, 40534, 43652, 54565, 76391, 81068, 101335, 109130, 141869, 152782, 202670, 218260, 283738, 305564, 381955, 405340, 567476, 709345, 763910, 993083, 1418690, 1527820, 1986166, 2837380, 3972332, 4965415, 9930830, 19861660]

約数ペア:

[(1, 19861660), (2, 9930830), (4, 4965415), (5, 3972332), (7, 2837380), (10, 1986166), (13, 1527820), (14, 1418690), (20, 993083), (26, 763910), (28, 709345), (35, 567476), (49, 405340), (52, 381955), (65, 305564), (70, 283738), (91, 218260), (98, 202670), (130, 152782), (140, 141869), (182, 109130), (196, 101335), (245, 81068), (260, 76391), (364, 54565), (455, 43652), (490, 40534), (637, 31180), (910, 21826), (980, 20267), (1274, 15590), (1559, 12740), (1820, 10913), (2548, 7795), (3118, 6370), (3185, 6236)]