80118440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:690

約数の個数: 64

約数和(自身を含む): 190944000

約数和(自身を除く): 110825560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 271, 380, 389, 542, 760, 778, 1084, 1355, 1556, 1945, 2168, 2710, 3112, 3890, 5149, 5420, 7391, 7780, 10298, 10840, 14782, 15560, 20596, 25745, 29564, 36955, 41192, 51490, 59128, 73910, 102980, 105419, 147820, 205960, 210838, 295640, 421676, 527095, 843352, 1054190, 2002961, 2108380, 4005922, 4216760, 8011844, 10014805, 16023688, 20029610, 40059220, 80118440]

約数ペア:

[(1, 80118440), (2, 40059220), (4, 20029610), (5, 16023688), (8, 10014805), (10, 8011844), (19, 4216760), (20, 4005922), (38, 2108380), (40, 2002961), (76, 1054190), (95, 843352), (152, 527095), (190, 421676), (271, 295640), (380, 210838), (389, 205960), (542, 147820), (760, 105419), (778, 102980), (1084, 73910), (1355, 59128), (1556, 51490), (1945, 41192), (2168, 36955), (2710, 29564), (3112, 25745), (3890, 20596), (5149, 15560), (5420, 14782), (7391, 10840), (7780, 10298)]