90621580

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{1039}}^1$

素因数の和:1151

約数の個数: 72

約数和(自身を含む): 224078400

約数和(自身を除く): 133456820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 356, 445, 490, 623, 890, 980, 1039, 1246, 1780, 2078, 2492, 3115, 4156, 4361, 5195, 6230, 7273, 8722, 10390, 12460, 14546, 17444, 20780, 21805, 29092, 36365, 43610, 50911, 72730, 87220, 92471, 101822, 145460, 184942, 203644, 254555, 369884, 462355, 509110, 647297, 924710, 1018220, 1294594, 1849420, 2589188, 3236485, 4531079, 6472970, 9062158, 12945940, 18124316, 22655395, 45310790, 90621580]

約数ペア:

[(1, 90621580), (2, 45310790), (4, 22655395), (5, 18124316), (7, 12945940), (10, 9062158), (14, 6472970), (20, 4531079), (28, 3236485), (35, 2589188), (49, 1849420), (70, 1294594), (89, 1018220), (98, 924710), (140, 647297), (178, 509110), (196, 462355), (245, 369884), (356, 254555), (445, 203644), (490, 184942), (623, 145460), (890, 101822), (980, 92471), (1039, 87220), (1246, 72730), (1780, 50911), (2078, 43610), (2492, 36365), (3115, 29092), (4156, 21805), (4361, 20780), (5195, 17444), (6230, 14546), (7273, 12460), (8722, 10390)]