1290100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 3402560

約数和(自身を除く): 2112460

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 97, 100, 133, 140, 175, 190, 194, 266, 350, 380, 388, 475, 485, 532, 665, 679, 700, 950, 970, 1330, 1358, 1843, 1900, 1940, 2425, 2660, 2716, 3325, 3395, 3686, 4850, 6650, 6790, 7372, 9215, 9700, 12901, 13300, 13580, 16975, 18430, 25802, 33950, 36860, 46075, 51604, 64505, 67900, 92150, 129010, 184300, 258020, 322525, 645050, 1290100]

約数ペア:

[(1, 1290100), (2, 645050), (4, 322525), (5, 258020), (7, 184300), (10, 129010), (14, 92150), (19, 67900), (20, 64505), (25, 51604), (28, 46075), (35, 36860), (38, 33950), (50, 25802), (70, 18430), (76, 16975), (95, 13580), (97, 13300), (100, 12901), (133, 9700), (140, 9215), (175, 7372), (190, 6790), (194, 6650), (266, 4850), (350, 3686), (380, 3395), (388, 3325), (475, 2716), (485, 2660), (532, 2425), (665, 1940), (679, 1900), (700, 1843), (950, 1358), (970, 1330)]