21021516

素因数分解:

$2^2\times 3^2\times {\mathrm{149}}^1\times {\mathrm{3919}}^1$

素因数の和:4078

約数の個数: 36

約数和(自身を含む): 53508000

約数和(自身を除く): 32486484

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 149, 298, 447, 596, 894, 1341, 1788, 2682, 3919, 5364, 7838, 11757, 15676, 23514, 35271, 47028, 70542, 141084, 583931, 1167862, 1751793, 2335724, 3503586, 5255379, 7007172, 10510758, 21021516]

約数ペア:

[(1, 21021516), (2, 10510758), (3, 7007172), (4, 5255379), (6, 3503586), (9, 2335724), (12, 1751793), (18, 1167862), (36, 583931), (149, 141084), (298, 70542), (447, 47028), (596, 35271), (894, 23514), (1341, 15676), (1788, 11757), (2682, 7838), (3919, 5364)]