21440340

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{311}}^1\times {\mathrm{383}}^1$

素因数の和:709

約数の個数: 72

約数和(自身を含む): 65415168

約数和(自身を除く): 43974828

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 311, 383, 622, 766, 933, 1149, 1244, 1532, 1555, 1866, 1915, 2298, 2799, 3110, 3447, 3732, 3830, 4596, 4665, 5598, 5745, 6220, 6894, 7660, 9330, 11196, 11490, 13788, 13995, 17235, 18660, 22980, 27990, 34470, 55980, 68940, 119113, 238226, 357339, 476452, 595565, 714678, 1072017, 1191130, 1429356, 1786695, 2144034, 2382260, 3573390, 4288068, 5360085, 7146780, 10720170, 21440340]

約数ペア:

[(1, 21440340), (2, 10720170), (3, 7146780), (4, 5360085), (5, 4288068), (6, 3573390), (9, 2382260), (10, 2144034), (12, 1786695), (15, 1429356), (18, 1191130), (20, 1072017), (30, 714678), (36, 595565), (45, 476452), (60, 357339), (90, 238226), (180, 119113), (311, 68940), (383, 55980), (622, 34470), (766, 27990), (933, 22980), (1149, 18660), (1244, 17235), (1532, 13995), (1555, 13788), (1866, 11490), (1915, 11196), (2298, 9330), (2799, 7660), (3110, 6894), (3447, 6220), (3732, 5745), (3830, 5598), (4596, 4665)]