641737980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1973}}^1$

素因数の和:2140

約数の個数: 144

約数和(自身を含む): 2112495840

約数和(自身を除く): 1470757860

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 139, 156, 180, 195, 234, 260, 278, 390, 417, 468, 556, 585, 695, 780, 834, 1170, 1251, 1390, 1668, 1807, 1973, 2085, 2340, 2502, 2780, 3614, 3946, 4170, 5004, 5421, 5919, 6255, 7228, 7892, 8340, 9035, 9865, 10842, 11838, 12510, 16263, 17757, 18070, 19730, 21684, 23676, 25020, 25649, 27105, 29595, 32526, 35514, 36140, 39460, 51298, 54210, 59190, 65052, 71028, 76947, 81315, 88785, 102596, 108420, 118380, 128245, 153894, 162630, 177570, 230841, 256490, 274247, 307788, 325260, 355140, 384735, 461682, 512980, 548494, 769470, 822741, 923364, 1096988, 1154205, 1371235, 1538940, 1645482, 2308410, 2468223, 2742470, 3290964, 3565211, 4113705, 4616820, 4936446, 5484940, 7130422, 8227410, 9872892, 10695633, 12341115, 14260844, 16454820, 17826055, 21391266, 24682230, 32086899, 35652110, 42782532, 49364460, 53478165, 64173798, 71304220, 106956330, 128347596, 160434495, 213912660, 320868990, 641737980]

約数ペア:

[(1, 641737980), (2, 320868990), (3, 213912660), (4, 160434495), (5, 128347596), (6, 106956330), (9, 71304220), (10, 64173798), (12, 53478165), (13, 49364460), (15, 42782532), (18, 35652110), (20, 32086899), (26, 24682230), (30, 21391266), (36, 17826055), (39, 16454820), (45, 14260844), (52, 12341115), (60, 10695633), (65, 9872892), (78, 8227410), (90, 7130422), (117, 5484940), (130, 4936446), (139, 4616820), (156, 4113705), (180, 3565211), (195, 3290964), (234, 2742470), (260, 2468223), (278, 2308410), (390, 1645482), (417, 1538940), (468, 1371235), (556, 1154205), (585, 1096988), (695, 923364), (780, 822741), (834, 769470), (1170, 548494), (1251, 512980), (1390, 461682), (1668, 384735), (1807, 355140), (1973, 325260), (2085, 307788), (2340, 274247), (2502, 256490), (2780, 230841), (3614, 177570), (3946, 162630), (4170, 153894), (5004, 128245), (5421, 118380), (5919, 108420), (6255, 102596), (7228, 88785), (7892, 81315), (8340, 76947), (9035, 71028), (9865, 65052), (10842, 59190), (11838, 54210), (12510, 51298), (16263, 39460), (17757, 36140), (18070, 35514), (19730, 32526), (21684, 29595), (23676, 27105), (25020, 25649)]