12711680

素因数分解:

$2^8\times 5^1\times {\mathrm{9931}}^1$

素因数の和:9952

約数の個数: 36

約数和(自身を含む): 30451512

約数和(自身を除く): 17739832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 9931, 19862, 39724, 49655, 79448, 99310, 158896, 198620, 317792, 397240, 635584, 794480, 1271168, 1588960, 2542336, 3177920, 6355840, 12711680]

約数ペア:

[(1, 12711680), (2, 6355840), (4, 3177920), (5, 2542336), (8, 1588960), (10, 1271168), (16, 794480), (20, 635584), (32, 397240), (40, 317792), (64, 198620), (80, 158896), (128, 99310), (160, 79448), (256, 49655), (320, 39724), (640, 19862), (1280, 9931)]