21397648

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1193}}^1$

素因数の和:1279

約数の個数: 40

約数和(自身を含む): 44416800

約数和(自身を除く): 23019152

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1193, 2242, 2386, 4484, 4772, 8968, 9544, 17936, 19088, 22667, 45334, 70387, 90668, 140774, 181336, 281548, 362672, 563096, 1126192, 1337353, 2674706, 5349412, 10698824, 21397648]

約数ペア:

[(1, 21397648), (2, 10698824), (4, 5349412), (8, 2674706), (16, 1337353), (19, 1126192), (38, 563096), (59, 362672), (76, 281548), (118, 181336), (152, 140774), (236, 90668), (304, 70387), (472, 45334), (944, 22667), (1121, 19088), (1193, 17936), (2242, 9544), (2386, 8968), (4484, 4772)]