81413920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{157}}^1\times {\mathrm{463}}^1$

素因数の和:642

約数の個数: 96

約数和(自身を含む): 221695488

約数和(自身を除く): 140281568

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 157, 160, 224, 280, 314, 463, 560, 628, 785, 926, 1099, 1120, 1256, 1570, 1852, 2198, 2315, 2512, 3140, 3241, 3704, 4396, 4630, 5024, 5495, 6280, 6482, 7408, 8792, 9260, 10990, 12560, 12964, 14816, 16205, 17584, 18520, 21980, 25120, 25928, 32410, 35168, 37040, 43960, 51856, 64820, 72691, 74080, 87920, 103712, 129640, 145382, 175840, 259280, 290764, 363455, 508837, 518560, 581528, 726910, 1017674, 1163056, 1453820, 2035348, 2326112, 2544185, 2907640, 4070696, 5088370, 5815280, 8141392, 10176740, 11630560, 16282784, 20353480, 40706960, 81413920]

約数ペア:

[(1, 81413920), (2, 40706960), (4, 20353480), (5, 16282784), (7, 11630560), (8, 10176740), (10, 8141392), (14, 5815280), (16, 5088370), (20, 4070696), (28, 2907640), (32, 2544185), (35, 2326112), (40, 2035348), (56, 1453820), (70, 1163056), (80, 1017674), (112, 726910), (140, 581528), (157, 518560), (160, 508837), (224, 363455), (280, 290764), (314, 259280), (463, 175840), (560, 145382), (628, 129640), (785, 103712), (926, 87920), (1099, 74080), (1120, 72691), (1256, 64820), (1570, 51856), (1852, 43960), (2198, 37040), (2315, 35168), (2512, 32410), (3140, 25928), (3241, 25120), (3704, 21980), (4396, 18520), (4630, 17584), (5024, 16205), (5495, 14816), (6280, 12964), (6482, 12560), (7408, 10990), (8792, 9260)]