19986988

素因数分解:

$2^2\times 7^1\times {\mathrm{113}}^1\times {\mathrm{6317}}^1$

素因数の和:6441

約数の個数: 24

約数和(自身を含む): 40334112

約数和(自身を除く): 20347124

約数列:

[1, 2, 4, 7, 14, 28, 113, 226, 452, 791, 1582, 3164, 6317, 12634, 25268, 44219, 88438, 176876, 713821, 1427642, 2855284, 4996747, 9993494, 19986988]

約数ペア:

[(1, 19986988), (2, 9993494), (4, 4996747), (7, 2855284), (14, 1427642), (28, 713821), (113, 176876), (226, 88438), (452, 44219), (791, 25268), (1582, 12634), (3164, 6317)]