129021400

素因数分解:

$2^3\times 5^2\times {\mathrm{19}}^2\times {\mathrm{1787}}^1$

素因数の和:1841

約数の個数: 72

約数和(自身を含む): 316771020

約数和(自身を除く): 187749620

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 152, 190, 200, 361, 380, 475, 722, 760, 950, 1444, 1787, 1805, 1900, 2888, 3574, 3610, 3800, 7148, 7220, 8935, 9025, 14296, 14440, 17870, 18050, 33953, 35740, 36100, 44675, 67906, 71480, 72200, 89350, 135812, 169765, 178700, 271624, 339530, 357400, 645107, 679060, 848825, 1290214, 1358120, 1697650, 2580428, 3225535, 3395300, 5160856, 6451070, 6790600, 12902140, 16127675, 25804280, 32255350, 64510700, 129021400]

約数ペア:

[(1, 129021400), (2, 64510700), (4, 32255350), (5, 25804280), (8, 16127675), (10, 12902140), (19, 6790600), (20, 6451070), (25, 5160856), (38, 3395300), (40, 3225535), (50, 2580428), (76, 1697650), (95, 1358120), (100, 1290214), (152, 848825), (190, 679060), (200, 645107), (361, 357400), (380, 339530), (475, 271624), (722, 178700), (760, 169765), (950, 135812), (1444, 89350), (1787, 72200), (1805, 71480), (1900, 67906), (2888, 44675), (3574, 36100), (3610, 35740), (3800, 33953), (7148, 18050), (7220, 17870), (8935, 14440), (9025, 14296)]