21640980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{293}}^1\times {\mathrm{1231}}^1$

素因数の和:1536

約数の個数: 48

約数和(自身を含む): 60850944

約数和(自身を除く): 39209964

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 293, 586, 879, 1172, 1231, 1465, 1758, 2462, 2930, 3516, 3693, 4395, 4924, 5860, 6155, 7386, 8790, 12310, 14772, 17580, 18465, 24620, 36930, 73860, 360683, 721366, 1082049, 1442732, 1803415, 2164098, 3606830, 4328196, 5410245, 7213660, 10820490, 21640980]

約数ペア:

[(1, 21640980), (2, 10820490), (3, 7213660), (4, 5410245), (5, 4328196), (6, 3606830), (10, 2164098), (12, 1803415), (15, 1442732), (20, 1082049), (30, 721366), (60, 360683), (293, 73860), (586, 36930), (879, 24620), (1172, 18465), (1231, 17580), (1465, 14772), (1758, 12310), (2462, 8790), (2930, 7386), (3516, 6155), (3693, 5860), (4395, 4924)]