81639428

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{4349}}^1$

素因数の和:4404

約数の個数: 36

約数和(自身を含む): 162420300

約数和(自身を除く): 80780872

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 361, 494, 722, 988, 1444, 4349, 4693, 8698, 9386, 17396, 18772, 56537, 82631, 113074, 165262, 226148, 330524, 1074203, 1569989, 2148406, 3139978, 4296812, 6279956, 20409857, 40819714, 81639428]

約数ペア:

[(1, 81639428), (2, 40819714), (4, 20409857), (13, 6279956), (19, 4296812), (26, 3139978), (38, 2148406), (52, 1569989), (76, 1074203), (247, 330524), (361, 226148), (494, 165262), (722, 113074), (988, 82631), (1444, 56537), (4349, 18772), (4693, 17396), (8698, 9386)]