21360780

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{5651}}^1$

素因数の和:5676

約数の個数: 96

約数和(自身を含む): 75962880

約数和(自身を除く): 54602100

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 84, 90, 105, 108, 126, 135, 140, 180, 189, 210, 252, 270, 315, 378, 420, 540, 630, 756, 945, 1260, 1890, 3780, 5651, 11302, 16953, 22604, 28255, 33906, 39557, 50859, 56510, 67812, 79114, 84765, 101718, 113020, 118671, 152577, 158228, 169530, 197785, 203436, 237342, 254295, 305154, 339060, 356013, 395570, 474684, 508590, 593355, 610308, 712026, 762885, 791140, 1017180, 1068039, 1186710, 1424052, 1525770, 1780065, 2136078, 2373420, 3051540, 3560130, 4272156, 5340195, 7120260, 10680390, 21360780]

約数ペア:

[(1, 21360780), (2, 10680390), (3, 7120260), (4, 5340195), (5, 4272156), (6, 3560130), (7, 3051540), (9, 2373420), (10, 2136078), (12, 1780065), (14, 1525770), (15, 1424052), (18, 1186710), (20, 1068039), (21, 1017180), (27, 791140), (28, 762885), (30, 712026), (35, 610308), (36, 593355), (42, 508590), (45, 474684), (54, 395570), (60, 356013), (63, 339060), (70, 305154), (84, 254295), (90, 237342), (105, 203436), (108, 197785), (126, 169530), (135, 158228), (140, 152577), (180, 118671), (189, 113020), (210, 101718), (252, 84765), (270, 79114), (315, 67812), (378, 56510), (420, 50859), (540, 39557), (630, 33906), (756, 28255), (945, 22604), (1260, 16953), (1890, 11302), (3780, 5651)]