12780122

素因数分解:

$2^1\times {\mathrm{19}}^2\times {\mathrm{31}}^1\times {\mathrm{571}}^1$

素因数の和:642

約数の個数: 24

約数和(自身を含む): 20921472

約数和(自身を除く): 8141350

約数列:

[1, 2, 19, 31, 38, 62, 361, 571, 589, 722, 1142, 1178, 10849, 11191, 17701, 21698, 22382, 35402, 206131, 336319, 412262, 672638, 6390061, 12780122]

約数ペア:

[(1, 12780122), (2, 6390061), (19, 672638), (31, 412262), (38, 336319), (62, 206131), (361, 35402), (571, 22382), (589, 21698), (722, 17701), (1142, 11191), (1178, 10849)]