20508765981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1\times {\mathrm{379}}^1$

素因数の和:830

約数の個数: 64

約数和(自身を含む): 30888345600

約数和(自身を除く): 10379579619

約数列:

[1, 3, 11, 33, 47, 139, 141, 251, 379, 417, 517, 753, 1137, 1529, 1551, 2761, 4169, 4587, 6533, 8283, 11797, 12507, 17813, 19599, 34889, 35391, 52681, 53439, 71863, 95129, 104667, 129767, 158043, 195943, 215589, 285387, 383779, 389301, 579491, 587829, 1046419, 1151337, 1639783, 1738473, 2476007, 3139257, 4471063, 4919349, 7428021, 13222931, 13413189, 18037613, 27236077, 39668793, 49181693, 54112839, 81708231, 145452241, 147545079, 436356723, 621477757, 1864433271, 6836255327, 20508765981]

約数ペア:

[(1, 20508765981), (3, 6836255327), (11, 1864433271), (33, 621477757), (47, 436356723), (139, 147545079), (141, 145452241), (251, 81708231), (379, 54112839), (417, 49181693), (517, 39668793), (753, 27236077), (1137, 18037613), (1529, 13413189), (1551, 13222931), (2761, 7428021), (4169, 4919349), (4587, 4471063), (6533, 3139257), (8283, 2476007), (11797, 1738473), (12507, 1639783), (17813, 1151337), (19599, 1046419), (34889, 587829), (35391, 579491), (52681, 389301), (53439, 383779), (71863, 285387), (95129, 215589), (104667, 195943), (129767, 158043)]