21969240

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{107}}^1$

素因数の和:209

約数の個数: 128

約数和(自身を含む): 69984000

約数和(自身を除く): 48014760

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 29, 30, 40, 58, 59, 60, 87, 107, 116, 118, 120, 145, 174, 177, 214, 232, 236, 290, 295, 321, 348, 354, 428, 435, 472, 535, 580, 590, 642, 696, 708, 856, 870, 885, 1070, 1160, 1180, 1284, 1416, 1605, 1711, 1740, 1770, 2140, 2360, 2568, 3103, 3210, 3422, 3480, 3540, 4280, 5133, 6206, 6313, 6420, 6844, 7080, 8555, 9309, 10266, 12412, 12626, 12840, 13688, 15515, 17110, 18618, 18939, 20532, 24824, 25252, 25665, 31030, 31565, 34220, 37236, 37878, 41064, 46545, 50504, 51330, 62060, 63130, 68440, 74472, 75756, 93090, 94695, 102660, 124120, 126260, 151512, 183077, 186180, 189390, 205320, 252520, 366154, 372360, 378780, 549231, 732308, 757560, 915385, 1098462, 1464616, 1830770, 2196924, 2746155, 3661540, 4393848, 5492310, 7323080, 10984620, 21969240]

約数ペア:

[(1, 21969240), (2, 10984620), (3, 7323080), (4, 5492310), (5, 4393848), (6, 3661540), (8, 2746155), (10, 2196924), (12, 1830770), (15, 1464616), (20, 1098462), (24, 915385), (29, 757560), (30, 732308), (40, 549231), (58, 378780), (59, 372360), (60, 366154), (87, 252520), (107, 205320), (116, 189390), (118, 186180), (120, 183077), (145, 151512), (174, 126260), (177, 124120), (214, 102660), (232, 94695), (236, 93090), (290, 75756), (295, 74472), (321, 68440), (348, 63130), (354, 62060), (428, 51330), (435, 50504), (472, 46545), (535, 41064), (580, 37878), (590, 37236), (642, 34220), (696, 31565), (708, 31030), (856, 25665), (870, 25252), (885, 24824), (1070, 20532), (1160, 18939), (1180, 18618), (1284, 17110), (1416, 15515), (1605, 13688), (1711, 12840), (1740, 12626), (1770, 12412), (2140, 10266), (2360, 9309), (2568, 8555), (3103, 7080), (3210, 6844), (3422, 6420), (3480, 6313), (3540, 6206), (4280, 5133)]