19910128

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{10457}}^1$

素因数の和:10489

約数の個数: 40

約数和(自身を含む): 46684512

約数和(自身を除く): 26774384

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1904, 10457, 20914, 41828, 73199, 83656, 146398, 167312, 177769, 292796, 355538, 585592, 711076, 1171184, 1244383, 1422152, 2488766, 2844304, 4977532, 9955064, 19910128]

約数ペア:

[(1, 19910128), (2, 9955064), (4, 4977532), (7, 2844304), (8, 2488766), (14, 1422152), (16, 1244383), (17, 1171184), (28, 711076), (34, 585592), (56, 355538), (68, 292796), (112, 177769), (119, 167312), (136, 146398), (238, 83656), (272, 73199), (476, 41828), (952, 20914), (1904, 10457)]