320631680

素因数分解:

$2^7\times 5^1\times {\mathrm{157}}^1\times {\mathrm{3191}}^1$

素因数の和:3367

約数の個数: 64

約数和(自身を含む): 771634080

約数和(自身を除く): 451002400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 157, 160, 314, 320, 628, 640, 785, 1256, 1570, 2512, 3140, 3191, 5024, 6280, 6382, 10048, 12560, 12764, 15955, 20096, 25120, 25528, 31910, 50240, 51056, 63820, 100480, 102112, 127640, 204224, 255280, 408448, 500987, 510560, 1001974, 1021120, 2003948, 2042240, 2504935, 4007896, 5009870, 8015792, 10019740, 16031584, 20039480, 32063168, 40078960, 64126336, 80157920, 160315840, 320631680]

約数ペア:

[(1, 320631680), (2, 160315840), (4, 80157920), (5, 64126336), (8, 40078960), (10, 32063168), (16, 20039480), (20, 16031584), (32, 10019740), (40, 8015792), (64, 5009870), (80, 4007896), (128, 2504935), (157, 2042240), (160, 2003948), (314, 1021120), (320, 1001974), (628, 510560), (640, 500987), (785, 408448), (1256, 255280), (1570, 204224), (2512, 127640), (3140, 102112), (3191, 100480), (5024, 63820), (6280, 51056), (6382, 50240), (10048, 31910), (12560, 25528), (12764, 25120), (15955, 20096)]