21554464

素因数分解:

$2^5\times {\mathrm{53}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:313

約数の個数: 48

約数和(自身を含む): 44089920

約数和(自身を除く): 22535456

約数列:

[1, 2, 4, 8, 16, 32, 53, 71, 106, 142, 179, 212, 284, 358, 424, 568, 716, 848, 1136, 1432, 1696, 2272, 2864, 3763, 5728, 7526, 9487, 12709, 15052, 18974, 25418, 30104, 37948, 50836, 60208, 75896, 101672, 120416, 151792, 203344, 303584, 406688, 673577, 1347154, 2694308, 5388616, 10777232, 21554464]

約数ペア:

[(1, 21554464), (2, 10777232), (4, 5388616), (8, 2694308), (16, 1347154), (32, 673577), (53, 406688), (71, 303584), (106, 203344), (142, 151792), (179, 120416), (212, 101672), (284, 75896), (358, 60208), (424, 50836), (568, 37948), (716, 30104), (848, 25418), (1136, 18974), (1432, 15052), (1696, 12709), (2272, 9487), (2864, 7526), (3763, 5728)]