21535353

素因数分解:

$3^2\times 7^2\times {\mathrm{47}}^1\times {\mathrm{1039}}^1$

素因数の和:1106

約数の個数: 36

約数和(自身を含む): 36990720

約数和(自身を除く): 15455367

約数列:

[1, 3, 7, 9, 21, 47, 49, 63, 141, 147, 329, 423, 441, 987, 1039, 2303, 2961, 3117, 6909, 7273, 9351, 20727, 21819, 48833, 50911, 65457, 146499, 152733, 341831, 439497, 458199, 1025493, 2392817, 3076479, 7178451, 21535353]

約数ペア:

[(1, 21535353), (3, 7178451), (7, 3076479), (9, 2392817), (21, 1025493), (47, 458199), (49, 439497), (63, 341831), (141, 152733), (147, 146499), (329, 65457), (423, 50911), (441, 48833), (987, 21819), (1039, 20727), (2303, 9351), (2961, 7273), (3117, 6909)]