21445398

素因数分解:

$2^1\times 3^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{599}}^1$

素因数の和:643

約数の個数: 80

約数和(自身を含む): 54885600

約数和(自身を除く): 33440202

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 27, 34, 39, 51, 54, 78, 81, 102, 117, 153, 162, 221, 234, 306, 351, 442, 459, 599, 663, 702, 918, 1053, 1198, 1326, 1377, 1797, 1989, 2106, 2754, 3594, 3978, 5391, 5967, 7787, 10183, 10782, 11934, 15574, 16173, 17901, 20366, 23361, 30549, 32346, 35802, 46722, 48519, 61098, 70083, 91647, 97038, 132379, 140166, 183294, 210249, 264758, 274941, 397137, 420498, 549882, 630747, 794274, 824823, 1191411, 1261494, 1649646, 2382822, 3574233, 7148466, 10722699, 21445398]

約数ペア:

[(1, 21445398), (2, 10722699), (3, 7148466), (6, 3574233), (9, 2382822), (13, 1649646), (17, 1261494), (18, 1191411), (26, 824823), (27, 794274), (34, 630747), (39, 549882), (51, 420498), (54, 397137), (78, 274941), (81, 264758), (102, 210249), (117, 183294), (153, 140166), (162, 132379), (221, 97038), (234, 91647), (306, 70083), (351, 61098), (442, 48519), (459, 46722), (599, 35802), (663, 32346), (702, 30549), (918, 23361), (1053, 20366), (1198, 17901), (1326, 16173), (1377, 15574), (1797, 11934), (1989, 10782), (2106, 10183), (2754, 7787), (3594, 5967), (3978, 5391)]