80928980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{1019}}^1$

素因数の和:1077

約数の個数: 72

約数和(自身を含む): 195864480

約数和(自身を除く): 114935500

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 361, 380, 418, 722, 836, 1019, 1045, 1444, 1805, 2038, 2090, 3610, 3971, 4076, 4180, 5095, 7220, 7942, 10190, 11209, 15884, 19361, 19855, 20380, 22418, 38722, 39710, 44836, 56045, 77444, 79420, 96805, 112090, 193610, 212971, 224180, 367859, 387220, 425942, 735718, 851884, 1064855, 1471436, 1839295, 2129710, 3678590, 4046449, 4259420, 7357180, 8092898, 16185796, 20232245, 40464490, 80928980]

約数ペア:

[(1, 80928980), (2, 40464490), (4, 20232245), (5, 16185796), (10, 8092898), (11, 7357180), (19, 4259420), (20, 4046449), (22, 3678590), (38, 2129710), (44, 1839295), (55, 1471436), (76, 1064855), (95, 851884), (110, 735718), (190, 425942), (209, 387220), (220, 367859), (361, 224180), (380, 212971), (418, 193610), (722, 112090), (836, 96805), (1019, 79420), (1045, 77444), (1444, 56045), (1805, 44836), (2038, 39710), (2090, 38722), (3610, 22418), (3971, 20380), (4076, 19855), (4180, 19361), (5095, 15884), (7220, 11209), (7942, 10190)]