21378304

素因数分解:

$2^8\times {\mathrm{37}}^2\times {\mathrm{61}}^1$

素因数の和:151

約数の個数: 54

約数和(自身を含む): 44576574

約数和(自身を除く): 23198270

約数列:

[1, 2, 4, 8, 16, 32, 37, 61, 64, 74, 122, 128, 148, 244, 256, 296, 488, 592, 976, 1184, 1369, 1952, 2257, 2368, 2738, 3904, 4514, 4736, 5476, 7808, 9028, 9472, 10952, 15616, 18056, 21904, 36112, 43808, 72224, 83509, 87616, 144448, 167018, 175232, 288896, 334036, 350464, 577792, 668072, 1336144, 2672288, 5344576, 10689152, 21378304]

約数ペア:

[(1, 21378304), (2, 10689152), (4, 5344576), (8, 2672288), (16, 1336144), (32, 668072), (37, 577792), (61, 350464), (64, 334036), (74, 288896), (122, 175232), (128, 167018), (148, 144448), (244, 87616), (256, 83509), (296, 72224), (488, 43808), (592, 36112), (976, 21904), (1184, 18056), (1369, 15616), (1952, 10952), (2257, 9472), (2368, 9028), (2738, 7808), (3904, 5476), (4514, 4736)]