21358720

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1451}}^1$

素因数の和:1493

約数の個数: 64

約数和(自身を含む): 53317440

約数和(自身を除く): 31958720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1451, 1472, 1840, 2902, 2944, 3680, 5804, 7255, 7360, 11608, 14510, 14720, 23216, 29020, 33373, 46432, 58040, 66746, 92864, 116080, 133492, 166865, 185728, 232160, 266984, 333730, 464320, 533968, 667460, 928640, 1067936, 1334920, 2135872, 2669840, 4271744, 5339680, 10679360, 21358720]

約数ペア:

[(1, 21358720), (2, 10679360), (4, 5339680), (5, 4271744), (8, 2669840), (10, 2135872), (16, 1334920), (20, 1067936), (23, 928640), (32, 667460), (40, 533968), (46, 464320), (64, 333730), (80, 266984), (92, 232160), (115, 185728), (128, 166865), (160, 133492), (184, 116080), (230, 92864), (320, 66746), (368, 58040), (460, 46432), (640, 33373), (736, 29020), (920, 23216), (1451, 14720), (1472, 14510), (1840, 11608), (2902, 7360), (2944, 7255), (3680, 5804)]