20480677

素因数分解:

$7^2\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 24

約数和(自身を含む): 25025280

約数和(自身を除く): 4544603

約数列:

[1, 7, 31, 49, 97, 139, 217, 679, 973, 1519, 3007, 4309, 4753, 6811, 13483, 21049, 30163, 94381, 147343, 211141, 417973, 660667, 2925811, 20480677]

約数ペア:

[(1, 20480677), (7, 2925811), (31, 660667), (49, 417973), (97, 211141), (139, 147343), (217, 94381), (679, 30163), (973, 21049), (1519, 13483), (3007, 6811), (4309, 4753)]