21606060

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7349}}^1$

素因数の和:7375

約数の個数: 72

約数和(自身を含む): 70383600

約数和(自身を除く): 48777540

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 7349, 14698, 22047, 29396, 36745, 44094, 51443, 73490, 88188, 102886, 110235, 146980, 154329, 205772, 220470, 257215, 308658, 360101, 440940, 514430, 617316, 720202, 771645, 1028860, 1080303, 1440404, 1543290, 1800505, 2160606, 3086580, 3601010, 4321212, 5401515, 7202020, 10803030, 21606060]

約数ペア:

[(1, 21606060), (2, 10803030), (3, 7202020), (4, 5401515), (5, 4321212), (6, 3601010), (7, 3086580), (10, 2160606), (12, 1800505), (14, 1543290), (15, 1440404), (20, 1080303), (21, 1028860), (28, 771645), (30, 720202), (35, 617316), (42, 514430), (49, 440940), (60, 360101), (70, 308658), (84, 257215), (98, 220470), (105, 205772), (140, 154329), (147, 146980), (196, 110235), (210, 102886), (245, 88188), (294, 73490), (420, 51443), (490, 44094), (588, 36745), (735, 29396), (980, 22047), (1470, 14698), (2940, 7349)]