1256115420

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{21211}}^1$

素因数の和:21280

約数の個数: 144

約数和(自身を含む): 4447392768

約数和(自身を除く): 3191277348

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 47, 60, 63, 70, 84, 90, 94, 105, 126, 140, 141, 180, 188, 210, 235, 252, 282, 315, 329, 420, 423, 470, 564, 630, 658, 705, 846, 940, 987, 1260, 1316, 1410, 1645, 1692, 1974, 2115, 2820, 2961, 3290, 3948, 4230, 4935, 5922, 6580, 8460, 9870, 11844, 14805, 19740, 21211, 29610, 42422, 59220, 63633, 84844, 106055, 127266, 148477, 190899, 212110, 254532, 296954, 318165, 381798, 424220, 445431, 593908, 636330, 742385, 763596, 890862, 954495, 996917, 1272660, 1336293, 1484770, 1781724, 1908990, 1993834, 2227155, 2672586, 2969540, 2990751, 3817980, 3987668, 4454310, 4984585, 5345172, 5981502, 6681465, 6978419, 8908620, 8972253, 9969170, 11963004, 13362930, 13956838, 14953755, 17944506, 19938340, 20935257, 26725860, 27913676, 29907510, 34892095, 35889012, 41870514, 44861265, 59815020, 62805771, 69784190, 83741028, 89722530, 104676285, 125611542, 139568380, 179445060, 209352570, 251223084, 314028855, 418705140, 628057710, 1256115420]

約数ペア:

[(1, 1256115420), (2, 628057710), (3, 418705140), (4, 314028855), (5, 251223084), (6, 209352570), (7, 179445060), (9, 139568380), (10, 125611542), (12, 104676285), (14, 89722530), (15, 83741028), (18, 69784190), (20, 62805771), (21, 59815020), (28, 44861265), (30, 41870514), (35, 35889012), (36, 34892095), (42, 29907510), (45, 27913676), (47, 26725860), (60, 20935257), (63, 19938340), (70, 17944506), (84, 14953755), (90, 13956838), (94, 13362930), (105, 11963004), (126, 9969170), (140, 8972253), (141, 8908620), (180, 6978419), (188, 6681465), (210, 5981502), (235, 5345172), (252, 4984585), (282, 4454310), (315, 3987668), (329, 3817980), (420, 2990751), (423, 2969540), (470, 2672586), (564, 2227155), (630, 1993834), (658, 1908990), (705, 1781724), (846, 1484770), (940, 1336293), (987, 1272660), (1260, 996917), (1316, 954495), (1410, 890862), (1645, 763596), (1692, 742385), (1974, 636330), (2115, 593908), (2820, 445431), (2961, 424220), (3290, 381798), (3948, 318165), (4230, 296954), (4935, 254532), (5922, 212110), (6580, 190899), (8460, 148477), (9870, 127266), (11844, 106055), (14805, 84844), (19740, 63633), (21211, 59220), (29610, 42422)]