20422920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{593}}^1$

素因数の和:655

約数の個数: 128

約数和(自身を含む): 71850240

約数和(自身を除く): 51427320

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 41, 42, 56, 60, 70, 82, 84, 105, 120, 123, 140, 164, 168, 205, 210, 246, 280, 287, 328, 410, 420, 492, 574, 593, 615, 820, 840, 861, 984, 1148, 1186, 1230, 1435, 1640, 1722, 1779, 2296, 2372, 2460, 2870, 2965, 3444, 3558, 4151, 4305, 4744, 4920, 5740, 5930, 6888, 7116, 8302, 8610, 8895, 11480, 11860, 12453, 14232, 16604, 17220, 17790, 20755, 23720, 24313, 24906, 33208, 34440, 35580, 41510, 48626, 49812, 62265, 71160, 72939, 83020, 97252, 99624, 121565, 124530, 145878, 166040, 170191, 194504, 243130, 249060, 291756, 340382, 364695, 486260, 498120, 510573, 583512, 680764, 729390, 850955, 972520, 1021146, 1361528, 1458780, 1701910, 2042292, 2552865, 2917560, 3403820, 4084584, 5105730, 6807640, 10211460, 20422920]

約数ペア:

[(1, 20422920), (2, 10211460), (3, 6807640), (4, 5105730), (5, 4084584), (6, 3403820), (7, 2917560), (8, 2552865), (10, 2042292), (12, 1701910), (14, 1458780), (15, 1361528), (20, 1021146), (21, 972520), (24, 850955), (28, 729390), (30, 680764), (35, 583512), (40, 510573), (41, 498120), (42, 486260), (56, 364695), (60, 340382), (70, 291756), (82, 249060), (84, 243130), (105, 194504), (120, 170191), (123, 166040), (140, 145878), (164, 124530), (168, 121565), (205, 99624), (210, 97252), (246, 83020), (280, 72939), (287, 71160), (328, 62265), (410, 49812), (420, 48626), (492, 41510), (574, 35580), (593, 34440), (615, 33208), (820, 24906), (840, 24313), (861, 23720), (984, 20755), (1148, 17790), (1186, 17220), (1230, 16604), (1435, 14232), (1640, 12453), (1722, 11860), (1779, 11480), (2296, 8895), (2372, 8610), (2460, 8302), (2870, 7116), (2965, 6888), (3444, 5930), (3558, 5740), (4151, 4920), (4305, 4744)]