21604770

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:320

約数の個数: 96

約数和(自身を含む): 62112960

約数和(自身を除く): 40508190

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 139, 157, 165, 198, 278, 314, 330, 417, 471, 495, 695, 785, 834, 942, 990, 1251, 1390, 1413, 1529, 1570, 1727, 2085, 2355, 2502, 2826, 3058, 3454, 4170, 4587, 4710, 5181, 6255, 7065, 7645, 8635, 9174, 10362, 12510, 13761, 14130, 15290, 15543, 17270, 21823, 22935, 25905, 27522, 31086, 43646, 45870, 51810, 65469, 68805, 77715, 109115, 130938, 137610, 155430, 196407, 218230, 240053, 327345, 392814, 480106, 654690, 720159, 982035, 1200265, 1440318, 1964070, 2160477, 2400530, 3600795, 4320954, 7201590, 10802385, 21604770]

約数ペア:

[(1, 21604770), (2, 10802385), (3, 7201590), (5, 4320954), (6, 3600795), (9, 2400530), (10, 2160477), (11, 1964070), (15, 1440318), (18, 1200265), (22, 982035), (30, 720159), (33, 654690), (45, 480106), (55, 392814), (66, 327345), (90, 240053), (99, 218230), (110, 196407), (139, 155430), (157, 137610), (165, 130938), (198, 109115), (278, 77715), (314, 68805), (330, 65469), (417, 51810), (471, 45870), (495, 43646), (695, 31086), (785, 27522), (834, 25905), (942, 22935), (990, 21823), (1251, 17270), (1390, 15543), (1413, 15290), (1529, 14130), (1570, 13761), (1727, 12510), (2085, 10362), (2355, 9174), (2502, 8635), (2826, 7645), (3058, 7065), (3454, 6255), (4170, 5181), (4587, 4710)]