21222400

素因数分解:

$2^{10}\times 5^2\times {\mathrm{829}}^1$

素因数の和:859

約数の個数: 66

約数和(自身を含む): 52669310

約数和(自身を除く): 31446910

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 829, 1024, 1280, 1600, 1658, 2560, 3200, 3316, 4145, 5120, 6400, 6632, 8290, 12800, 13264, 16580, 20725, 25600, 26528, 33160, 41450, 53056, 66320, 82900, 106112, 132640, 165800, 212224, 265280, 331600, 424448, 530560, 663200, 848896, 1061120, 1326400, 2122240, 2652800, 4244480, 5305600, 10611200, 21222400]

約数ペア:

[(1, 21222400), (2, 10611200), (4, 5305600), (5, 4244480), (8, 2652800), (10, 2122240), (16, 1326400), (20, 1061120), (25, 848896), (32, 663200), (40, 530560), (50, 424448), (64, 331600), (80, 265280), (100, 212224), (128, 165800), (160, 132640), (200, 106112), (256, 82900), (320, 66320), (400, 53056), (512, 41450), (640, 33160), (800, 26528), (829, 25600), (1024, 20725), (1280, 16580), (1600, 13264), (1658, 12800), (2560, 8290), (3200, 6632), (3316, 6400), (4145, 5120)]