209415220

素因数分解:

$2^2\times 5^1\times 7^6\times {\mathrm{89}}^1$

素因数の和:140

約数の個数: 84

約数和(自身を含む): 518831460

約数和(自身を除く): 309416240

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 343, 356, 445, 490, 623, 686, 890, 980, 1246, 1372, 1715, 1780, 2401, 2492, 3115, 3430, 4361, 4802, 6230, 6860, 8722, 9604, 12005, 12460, 16807, 17444, 21805, 24010, 30527, 33614, 43610, 48020, 61054, 67228, 84035, 87220, 117649, 122108, 152635, 168070, 213689, 235298, 305270, 336140, 427378, 470596, 588245, 610540, 854756, 1068445, 1176490, 1495823, 2136890, 2352980, 2991646, 4273780, 5983292, 7479115, 10470761, 14958230, 20941522, 29916460, 41883044, 52353805, 104707610, 209415220]

約数ペア:

[(1, 209415220), (2, 104707610), (4, 52353805), (5, 41883044), (7, 29916460), (10, 20941522), (14, 14958230), (20, 10470761), (28, 7479115), (35, 5983292), (49, 4273780), (70, 2991646), (89, 2352980), (98, 2136890), (140, 1495823), (178, 1176490), (196, 1068445), (245, 854756), (343, 610540), (356, 588245), (445, 470596), (490, 427378), (623, 336140), (686, 305270), (890, 235298), (980, 213689), (1246, 168070), (1372, 152635), (1715, 122108), (1780, 117649), (2401, 87220), (2492, 84035), (3115, 67228), (3430, 61054), (4361, 48020), (4802, 43610), (6230, 33614), (6860, 30527), (8722, 24010), (9604, 21805), (12005, 17444), (12460, 16807)]