30788660

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{353}}^1$

素因数の和:465

約数の個数: 72

約数和(自身を含む): 76272840

約数和(自身を除く): 45484180

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 353, 356, 445, 490, 623, 706, 890, 980, 1246, 1412, 1765, 1780, 2471, 2492, 3115, 3530, 4361, 4942, 6230, 7060, 8722, 9884, 12355, 12460, 17297, 17444, 21805, 24710, 31417, 34594, 43610, 49420, 62834, 69188, 86485, 87220, 125668, 157085, 172970, 219919, 314170, 345940, 439838, 628340, 879676, 1099595, 1539433, 2199190, 3078866, 4398380, 6157732, 7697165, 15394330, 30788660]

約数ペア:

[(1, 30788660), (2, 15394330), (4, 7697165), (5, 6157732), (7, 4398380), (10, 3078866), (14, 2199190), (20, 1539433), (28, 1099595), (35, 879676), (49, 628340), (70, 439838), (89, 345940), (98, 314170), (140, 219919), (178, 172970), (196, 157085), (245, 125668), (353, 87220), (356, 86485), (445, 69188), (490, 62834), (623, 49420), (706, 43610), (890, 34594), (980, 31417), (1246, 24710), (1412, 21805), (1765, 17444), (1780, 17297), (2471, 12460), (2492, 12355), (3115, 9884), (3530, 8722), (4361, 7060), (4942, 6230)]