18249903

素因数分解:

$3^2\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1427}}^1$

素因数の和:1476

約数の個数: 36

約数和(自身を含む): 31744440

約数和(自身を除く): 13494537

約数列:

[1, 3, 7, 9, 21, 29, 49, 63, 87, 147, 203, 261, 441, 609, 1421, 1427, 1827, 4263, 4281, 9989, 12789, 12843, 29967, 41383, 69923, 89901, 124149, 209769, 289681, 372447, 629307, 869043, 2027767, 2607129, 6083301, 18249903]

約数ペア:

[(1, 18249903), (3, 6083301), (7, 2607129), (9, 2027767), (21, 869043), (29, 629307), (49, 372447), (63, 289681), (87, 209769), (147, 124149), (203, 89901), (261, 69923), (441, 41383), (609, 29967), (1421, 12843), (1427, 12789), (1827, 9989), (4263, 4281)]