21036496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{5323}}^1$

素因数の和:5363

約数の個数: 40

約数和(自身を含む): 46212320

約数和(自身を除く): 25175824

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 5323, 10646, 21292, 42584, 69199, 85168, 101137, 138398, 202274, 276796, 404548, 553592, 809096, 1107184, 1314781, 1618192, 2629562, 5259124, 10518248, 21036496]

約数ペア:

[(1, 21036496), (2, 10518248), (4, 5259124), (8, 2629562), (13, 1618192), (16, 1314781), (19, 1107184), (26, 809096), (38, 553592), (52, 404548), (76, 276796), (104, 202274), (152, 138398), (208, 101137), (247, 85168), (304, 69199), (494, 42584), (988, 21292), (1976, 10646), (3952, 5323)]