18340980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{43669}}^1$

素因数の和:43688

約数の個数: 48

約数和(自身を含む): 58692480

約数和(自身を除く): 40351500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 43669, 87338, 131007, 174676, 218345, 262014, 305683, 436690, 524028, 611366, 655035, 873380, 917049, 1222732, 1310070, 1528415, 1834098, 2620140, 3056830, 3668196, 4585245, 6113660, 9170490, 18340980]

約数ペア:

[(1, 18340980), (2, 9170490), (3, 6113660), (4, 4585245), (5, 3668196), (6, 3056830), (7, 2620140), (10, 1834098), (12, 1528415), (14, 1310070), (15, 1222732), (20, 917049), (21, 873380), (28, 655035), (30, 611366), (35, 524028), (42, 436690), (60, 305683), (70, 262014), (84, 218345), (105, 174676), (140, 131007), (210, 87338), (420, 43669)]