19947840

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1889}}^1$

素因数の和:1920

約数の個数: 112

約数和(自身を含む): 69128640

約数和(自身を除く): 49180800

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 20, 22, 24, 30, 32, 33, 40, 44, 48, 55, 60, 64, 66, 80, 88, 96, 110, 120, 132, 160, 165, 176, 192, 220, 240, 264, 320, 330, 352, 440, 480, 528, 660, 704, 880, 960, 1056, 1320, 1760, 1889, 2112, 2640, 3520, 3778, 5280, 5667, 7556, 9445, 10560, 11334, 15112, 18890, 20779, 22668, 28335, 30224, 37780, 41558, 45336, 56670, 60448, 62337, 75560, 83116, 90672, 103895, 113340, 120896, 124674, 151120, 166232, 181344, 207790, 226680, 249348, 302240, 311685, 332464, 362688, 415580, 453360, 498696, 604480, 623370, 664928, 831160, 906720, 997392, 1246740, 1329856, 1662320, 1813440, 1994784, 2493480, 3324640, 3989568, 4986960, 6649280, 9973920, 19947840]

約数ペア:

[(1, 19947840), (2, 9973920), (3, 6649280), (4, 4986960), (5, 3989568), (6, 3324640), (8, 2493480), (10, 1994784), (11, 1813440), (12, 1662320), (15, 1329856), (16, 1246740), (20, 997392), (22, 906720), (24, 831160), (30, 664928), (32, 623370), (33, 604480), (40, 498696), (44, 453360), (48, 415580), (55, 362688), (60, 332464), (64, 311685), (66, 302240), (80, 249348), (88, 226680), (96, 207790), (110, 181344), (120, 166232), (132, 151120), (160, 124674), (165, 120896), (176, 113340), (192, 103895), (220, 90672), (240, 83116), (264, 75560), (320, 62337), (330, 60448), (352, 56670), (440, 45336), (480, 41558), (528, 37780), (660, 30224), (704, 28335), (880, 22668), (960, 20779), (1056, 18890), (1320, 15112), (1760, 11334), (1889, 10560), (2112, 9445), (2640, 7556), (3520, 5667), (3778, 5280)]