21023100

素因数分解:

$2^2\times 3^2\times 5^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:145

約数の個数: 216

約数和(自身を含む): 77995008

約数和(自身を除く): 56971908

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 25, 28, 30, 35, 36, 42, 45, 47, 50, 60, 63, 70, 71, 75, 84, 90, 94, 100, 105, 126, 140, 141, 142, 150, 175, 180, 188, 210, 213, 225, 235, 252, 282, 284, 300, 315, 329, 350, 355, 420, 423, 426, 450, 470, 497, 525, 564, 630, 639, 658, 700, 705, 710, 846, 852, 900, 940, 987, 994, 1050, 1065, 1175, 1260, 1278, 1316, 1410, 1420, 1491, 1575, 1645, 1692, 1775, 1974, 1988, 2100, 2115, 2130, 2350, 2485, 2556, 2820, 2961, 2982, 3150, 3195, 3290, 3337, 3525, 3550, 3948, 4230, 4260, 4473, 4700, 4935, 4970, 5325, 5922, 5964, 6300, 6390, 6580, 6674, 7050, 7100, 7455, 8225, 8460, 8946, 9870, 9940, 10011, 10575, 10650, 11844, 12425, 12780, 13348, 14100, 14805, 14910, 15975, 16450, 16685, 17892, 19740, 20022, 21150, 21300, 22365, 23359, 24675, 24850, 29610, 29820, 30033, 31950, 32900, 33370, 37275, 40044, 42300, 44730, 46718, 49350, 49700, 50055, 59220, 60066, 63900, 66740, 70077, 74025, 74550, 83425, 89460, 93436, 98700, 100110, 111825, 116795, 120132, 140154, 148050, 149100, 150165, 166850, 200220, 210231, 223650, 233590, 250275, 280308, 296100, 300330, 333700, 350385, 420462, 447300, 467180, 500550, 583975, 600660, 700770, 750825, 840924, 1001100, 1051155, 1167950, 1401540, 1501650, 1751925, 2102310, 2335900, 3003300, 3503850, 4204620, 5255775, 7007700, 10511550, 21023100]

約数ペア:

[(1, 21023100), (2, 10511550), (3, 7007700), (4, 5255775), (5, 4204620), (6, 3503850), (7, 3003300), (9, 2335900), (10, 2102310), (12, 1751925), (14, 1501650), (15, 1401540), (18, 1167950), (20, 1051155), (21, 1001100), (25, 840924), (28, 750825), (30, 700770), (35, 600660), (36, 583975), (42, 500550), (45, 467180), (47, 447300), (50, 420462), (60, 350385), (63, 333700), (70, 300330), (71, 296100), (75, 280308), (84, 250275), (90, 233590), (94, 223650), (100, 210231), (105, 200220), (126, 166850), (140, 150165), (141, 149100), (142, 148050), (150, 140154), (175, 120132), (180, 116795), (188, 111825), (210, 100110), (213, 98700), (225, 93436), (235, 89460), (252, 83425), (282, 74550), (284, 74025), (300, 70077), (315, 66740), (329, 63900), (350, 60066), (355, 59220), (420, 50055), (423, 49700), (426, 49350), (450, 46718), (470, 44730), (497, 42300), (525, 40044), (564, 37275), (630, 33370), (639, 32900), (658, 31950), (700, 30033), (705, 29820), (710, 29610), (846, 24850), (852, 24675), (900, 23359), (940, 22365), (987, 21300), (994, 21150), (1050, 20022), (1065, 19740), (1175, 17892), (1260, 16685), (1278, 16450), (1316, 15975), (1410, 14910), (1420, 14805), (1491, 14100), (1575, 13348), (1645, 12780), (1692, 12425), (1775, 11844), (1974, 10650), (1988, 10575), (2100, 10011), (2115, 9940), (2130, 9870), (2350, 8946), (2485, 8460), (2556, 8225), (2820, 7455), (2961, 7100), (2982, 7050), (3150, 6674), (3195, 6580), (3290, 6390), (3337, 6300), (3525, 5964), (3550, 5922), (3948, 5325), (4230, 4970), (4260, 4935), (4473, 4700)]