21009492

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{317}}^1$

素因数の和:597

約数の個数: 72

約数和(自身を含む): 61117056

約数和(自身を除く): 40107564

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 263, 317, 526, 634, 789, 951, 1052, 1268, 1578, 1841, 1902, 2219, 2367, 2853, 3156, 3682, 3804, 4438, 4734, 5523, 5706, 6657, 7364, 8876, 9468, 11046, 11412, 13314, 16569, 19971, 22092, 26628, 33138, 39942, 66276, 79884, 83371, 166742, 250113, 333484, 500226, 583597, 750339, 1000452, 1167194, 1500678, 1750791, 2334388, 3001356, 3501582, 5252373, 7003164, 10504746, 21009492]

約数ペア:

[(1, 21009492), (2, 10504746), (3, 7003164), (4, 5252373), (6, 3501582), (7, 3001356), (9, 2334388), (12, 1750791), (14, 1500678), (18, 1167194), (21, 1000452), (28, 750339), (36, 583597), (42, 500226), (63, 333484), (84, 250113), (126, 166742), (252, 83371), (263, 79884), (317, 66276), (526, 39942), (634, 33138), (789, 26628), (951, 22092), (1052, 19971), (1268, 16569), (1578, 13314), (1841, 11412), (1902, 11046), (2219, 9468), (2367, 8876), (2853, 7364), (3156, 6657), (3682, 5706), (3804, 5523), (4438, 4734)]