21486780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{17053}}^1$

素因数の和:17075

約数の個数: 72

約数和(自身を含む): 74491872

約数和(自身を除く): 53005092

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 17053, 34106, 51159, 68212, 85265, 102318, 119371, 153477, 170530, 204636, 238742, 255795, 306954, 341060, 358113, 477484, 511590, 596855, 613908, 716226, 767385, 1023180, 1074339, 1193710, 1432452, 1534770, 1790565, 2148678, 2387420, 3069540, 3581130, 4297356, 5371695, 7162260, 10743390, 21486780]

約数ペア:

[(1, 21486780), (2, 10743390), (3, 7162260), (4, 5371695), (5, 4297356), (6, 3581130), (7, 3069540), (9, 2387420), (10, 2148678), (12, 1790565), (14, 1534770), (15, 1432452), (18, 1193710), (20, 1074339), (21, 1023180), (28, 767385), (30, 716226), (35, 613908), (36, 596855), (42, 511590), (45, 477484), (60, 358113), (63, 341060), (70, 306954), (84, 255795), (90, 238742), (105, 204636), (126, 170530), (140, 153477), (180, 119371), (210, 102318), (252, 85265), (315, 68212), (420, 51159), (630, 34106), (1260, 17053)]