71689520

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{409}}^1$

素因数の和:742

約数の個数: 80

約数和(自身を含む): 191565120

約数和(自身を除く): 119875600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 313, 409, 560, 626, 818, 1252, 1565, 1636, 2045, 2191, 2504, 2863, 3130, 3272, 4090, 4382, 5008, 5726, 6260, 6544, 8180, 8764, 10955, 11452, 12520, 14315, 16360, 17528, 21910, 22904, 25040, 28630, 32720, 35056, 43820, 45808, 57260, 87640, 114520, 128017, 175280, 229040, 256034, 512068, 640085, 896119, 1024136, 1280170, 1792238, 2048272, 2560340, 3584476, 4480595, 5120680, 7168952, 8961190, 10241360, 14337904, 17922380, 35844760, 71689520]

約数ペア:

[(1, 71689520), (2, 35844760), (4, 17922380), (5, 14337904), (7, 10241360), (8, 8961190), (10, 7168952), (14, 5120680), (16, 4480595), (20, 3584476), (28, 2560340), (35, 2048272), (40, 1792238), (56, 1280170), (70, 1024136), (80, 896119), (112, 640085), (140, 512068), (280, 256034), (313, 229040), (409, 175280), (560, 128017), (626, 114520), (818, 87640), (1252, 57260), (1565, 45808), (1636, 43820), (2045, 35056), (2191, 32720), (2504, 28630), (2863, 25040), (3130, 22904), (3272, 21910), (4090, 17528), (4382, 16360), (5008, 14315), (5726, 12520), (6260, 11452), (6544, 10955), (8180, 8764)]