21286440

素因数分解:

$2^3\times 3^2\times 5^1\times 7^1\times {\mathrm{8447}}^1$

素因数の和:8471

約数の個数: 96

約数和(自身を含む): 79073280

約数和(自身を除く): 57786840

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 56, 60, 63, 70, 72, 84, 90, 105, 120, 126, 140, 168, 180, 210, 252, 280, 315, 360, 420, 504, 630, 840, 1260, 2520, 8447, 16894, 25341, 33788, 42235, 50682, 59129, 67576, 76023, 84470, 101364, 118258, 126705, 152046, 168940, 177387, 202728, 236516, 253410, 295645, 304092, 337880, 354774, 380115, 473032, 506820, 532161, 591290, 608184, 709548, 760230, 886935, 1013640, 1064322, 1182580, 1419096, 1520460, 1773870, 2128644, 2365160, 2660805, 3040920, 3547740, 4257288, 5321610, 7095480, 10643220, 21286440]

約数ペア:

[(1, 21286440), (2, 10643220), (3, 7095480), (4, 5321610), (5, 4257288), (6, 3547740), (7, 3040920), (8, 2660805), (9, 2365160), (10, 2128644), (12, 1773870), (14, 1520460), (15, 1419096), (18, 1182580), (20, 1064322), (21, 1013640), (24, 886935), (28, 760230), (30, 709548), (35, 608184), (36, 591290), (40, 532161), (42, 506820), (45, 473032), (56, 380115), (60, 354774), (63, 337880), (70, 304092), (72, 295645), (84, 253410), (90, 236516), (105, 202728), (120, 177387), (126, 168940), (140, 152046), (168, 126705), (180, 118258), (210, 101364), (252, 84470), (280, 76023), (315, 67576), (360, 59129), (420, 50682), (504, 42235), (630, 33788), (840, 25341), (1260, 16894), (2520, 8447)]