21513824

素因数分解:

$2^5\times {\mathrm{29}}^1\times {\mathrm{97}}^1\times {\mathrm{239}}^1$

素因数の和:375

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 22938976

約数列:

[1, 2, 4, 8, 16, 29, 32, 58, 97, 116, 194, 232, 239, 388, 464, 478, 776, 928, 956, 1552, 1912, 2813, 3104, 3824, 5626, 6931, 7648, 11252, 13862, 22504, 23183, 27724, 45008, 46366, 55448, 90016, 92732, 110896, 185464, 221792, 370928, 672307, 741856, 1344614, 2689228, 5378456, 10756912, 21513824]

約数ペア:

[(1, 21513824), (2, 10756912), (4, 5378456), (8, 2689228), (16, 1344614), (29, 741856), (32, 672307), (58, 370928), (97, 221792), (116, 185464), (194, 110896), (232, 92732), (239, 90016), (388, 55448), (464, 46366), (478, 45008), (776, 27724), (928, 23183), (956, 22504), (1552, 13862), (1912, 11252), (2813, 7648), (3104, 6931), (3824, 5626)]