138120880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{1021}}^1$

素因数の和:1142

約数の個数: 80

約数和(自身を含む): 342165600

約数和(自身を除く): 204044720

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 89, 95, 152, 178, 190, 304, 356, 380, 445, 712, 760, 890, 1021, 1424, 1520, 1691, 1780, 2042, 3382, 3560, 4084, 5105, 6764, 7120, 8168, 8455, 10210, 13528, 16336, 16910, 19399, 20420, 27056, 33820, 38798, 40840, 67640, 77596, 81680, 90869, 96995, 135280, 155192, 181738, 193990, 310384, 363476, 387980, 454345, 726952, 775960, 908690, 1453904, 1551920, 1726511, 1817380, 3453022, 3634760, 6906044, 7269520, 8632555, 13812088, 17265110, 27624176, 34530220, 69060440, 138120880]

約数ペア:

[(1, 138120880), (2, 69060440), (4, 34530220), (5, 27624176), (8, 17265110), (10, 13812088), (16, 8632555), (19, 7269520), (20, 6906044), (38, 3634760), (40, 3453022), (76, 1817380), (80, 1726511), (89, 1551920), (95, 1453904), (152, 908690), (178, 775960), (190, 726952), (304, 454345), (356, 387980), (380, 363476), (445, 310384), (712, 193990), (760, 181738), (890, 155192), (1021, 135280), (1424, 96995), (1520, 90869), (1691, 81680), (1780, 77596), (2042, 67640), (3382, 40840), (3560, 38798), (4084, 33820), (5105, 27056), (6764, 20420), (7120, 19399), (8168, 16910), (8455, 16336), (10210, 13528)]