21741824

素因数分解:

$2^8\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{139}}^1$

素因数の和:215

約数の個数: 72

約数和(自身を含む): 48074880

約数和(自身を除く): 26333056

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 47, 52, 64, 94, 104, 128, 139, 188, 208, 256, 278, 376, 416, 556, 611, 752, 832, 1112, 1222, 1504, 1664, 1807, 2224, 2444, 3008, 3328, 3614, 4448, 4888, 6016, 6533, 7228, 8896, 9776, 12032, 13066, 14456, 17792, 19552, 26132, 28912, 35584, 39104, 52264, 57824, 78208, 84929, 104528, 115648, 156416, 169858, 209056, 231296, 339716, 418112, 462592, 679432, 836224, 1358864, 1672448, 2717728, 5435456, 10870912, 21741824]

約数ペア:

[(1, 21741824), (2, 10870912), (4, 5435456), (8, 2717728), (13, 1672448), (16, 1358864), (26, 836224), (32, 679432), (47, 462592), (52, 418112), (64, 339716), (94, 231296), (104, 209056), (128, 169858), (139, 156416), (188, 115648), (208, 104528), (256, 84929), (278, 78208), (376, 57824), (416, 52264), (556, 39104), (611, 35584), (752, 28912), (832, 26132), (1112, 19552), (1222, 17792), (1504, 14456), (1664, 13066), (1807, 12032), (2224, 9776), (2444, 8896), (3008, 7228), (3328, 6533), (3614, 6016), (4448, 4888)]