19665872

素因数分解:

$2^4\times {\mathrm{17}}^2\times {\mathrm{4253}}^1$

素因数の和:4295

約数の個数: 30

約数和(自身を含む): 40485318

約数和(自身を除く): 20819446

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 289, 578, 1156, 2312, 4253, 4624, 8506, 17012, 34024, 68048, 72301, 144602, 289204, 578408, 1156816, 1229117, 2458234, 4916468, 9832936, 19665872]

約数ペア:

[(1, 19665872), (2, 9832936), (4, 4916468), (8, 2458234), (16, 1229117), (17, 1156816), (34, 578408), (68, 289204), (136, 144602), (272, 72301), (289, 68048), (578, 34024), (1156, 17012), (2312, 8506), (4253, 4624)]