20812680

素因数分解:

$2^3\times 3^3\times 5^1\times 7^1\times {\mathrm{2753}}^1$

素因数の和:2780

約数の個数: 128

約数和(自身を含む): 79315200

約数和(自身を除く): 58502520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 27, 28, 30, 35, 36, 40, 42, 45, 54, 56, 60, 63, 70, 72, 84, 90, 105, 108, 120, 126, 135, 140, 168, 180, 189, 210, 216, 252, 270, 280, 315, 360, 378, 420, 504, 540, 630, 756, 840, 945, 1080, 1260, 1512, 1890, 2520, 2753, 3780, 5506, 7560, 8259, 11012, 13765, 16518, 19271, 22024, 24777, 27530, 33036, 38542, 41295, 49554, 55060, 57813, 66072, 74331, 77084, 82590, 96355, 99108, 110120, 115626, 123885, 148662, 154168, 165180, 173439, 192710, 198216, 231252, 247770, 289065, 297324, 330360, 346878, 371655, 385420, 462504, 495540, 520317, 578130, 594648, 693756, 743310, 770840, 867195, 991080, 1040634, 1156260, 1387512, 1486620, 1734390, 2081268, 2312520, 2601585, 2973240, 3468780, 4162536, 5203170, 6937560, 10406340, 20812680]

約数ペア:

[(1, 20812680), (2, 10406340), (3, 6937560), (4, 5203170), (5, 4162536), (6, 3468780), (7, 2973240), (8, 2601585), (9, 2312520), (10, 2081268), (12, 1734390), (14, 1486620), (15, 1387512), (18, 1156260), (20, 1040634), (21, 991080), (24, 867195), (27, 770840), (28, 743310), (30, 693756), (35, 594648), (36, 578130), (40, 520317), (42, 495540), (45, 462504), (54, 385420), (56, 371655), (60, 346878), (63, 330360), (70, 297324), (72, 289065), (84, 247770), (90, 231252), (105, 198216), (108, 192710), (120, 173439), (126, 165180), (135, 154168), (140, 148662), (168, 123885), (180, 115626), (189, 110120), (210, 99108), (216, 96355), (252, 82590), (270, 77084), (280, 74331), (315, 66072), (360, 57813), (378, 55060), (420, 49554), (504, 41295), (540, 38542), (630, 33036), (756, 27530), (840, 24777), (945, 22024), (1080, 19271), (1260, 16518), (1512, 13765), (1890, 11012), (2520, 8259), (2753, 7560), (3780, 5506)]