678802131

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{72313}}^1$

素因数の和:72475

約数の個数: 24

約数和(自身を含む): 1128098400

約数和(自身を除く): 449296269

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 3129, 9387, 72313, 216939, 506191, 650817, 1518573, 4555719, 10774637, 32323911, 75422459, 96971733, 226267377, 678802131]

約数ペア:

[(1, 678802131), (3, 226267377), (7, 96971733), (9, 75422459), (21, 32323911), (63, 10774637), (149, 4555719), (447, 1518573), (1043, 650817), (1341, 506191), (3129, 216939), (9387, 72313)]