21322240

素因数分解:

$2^9\times 5^1\times {\mathrm{8329}}^1$

素因数の和:8352

約数の個数: 40

約数和(自身を含む): 51129540

約数和(自身を除く): 29807300

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8329, 16658, 33316, 41645, 66632, 83290, 133264, 166580, 266528, 333160, 533056, 666320, 1066112, 1332640, 2132224, 2665280, 4264448, 5330560, 10661120, 21322240]

約数ペア:

[(1, 21322240), (2, 10661120), (4, 5330560), (5, 4264448), (8, 2665280), (10, 2132224), (16, 1332640), (20, 1066112), (32, 666320), (40, 533056), (64, 333160), (80, 266528), (128, 166580), (160, 133264), (256, 83290), (320, 66632), (512, 41645), (640, 33316), (1280, 16658), (2560, 8329)]