20778858261

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{141131}}^1$

素因数の和:141207

約数の個数: 64

約数和(自身を含む): 37936281600

約数和(自身を除く): 17157423339

約数列:

[1, 3, 7, 9, 19, 21, 27, 41, 57, 63, 123, 133, 171, 189, 287, 369, 399, 513, 779, 861, 1107, 1197, 2337, 2583, 3591, 5453, 7011, 7749, 16359, 21033, 49077, 141131, 147231, 423393, 987917, 1270179, 2681489, 2963751, 3810537, 5786371, 8044467, 8891253, 17359113, 18770423, 24133401, 26673759, 40504597, 52077339, 56311269, 72400203, 109941049, 121513791, 156232017, 168933807, 329823147, 364541373, 506801421, 769587343, 989469441, 1093624119, 2308762029, 2968408323, 6926286087, 20778858261]

約数ペア:

[(1, 20778858261), (3, 6926286087), (7, 2968408323), (9, 2308762029), (19, 1093624119), (21, 989469441), (27, 769587343), (41, 506801421), (57, 364541373), (63, 329823147), (123, 168933807), (133, 156232017), (171, 121513791), (189, 109941049), (287, 72400203), (369, 56311269), (399, 52077339), (513, 40504597), (779, 26673759), (861, 24133401), (1107, 18770423), (1197, 17359113), (2337, 8891253), (2583, 8044467), (3591, 5786371), (5453, 3810537), (7011, 2963751), (7749, 2681489), (16359, 1270179), (21033, 987917), (49077, 423393), (141131, 147231)]