687403564020

素因数分解:

$2^2\times 3^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{640649}}^1$

素因数の和:642654

約数の個数: 96

約数和(自身を含む): 2139668496000

約数和(自身を除く): 1452264931980

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 270, 540, 1987, 3974, 5961, 7948, 9935, 11922, 17883, 19870, 23844, 29805, 35766, 39740, 53649, 59610, 71532, 89415, 107298, 119220, 178830, 214596, 268245, 357660, 536490, 640649, 1072980, 1281298, 1921947, 2562596, 3203245, 3843894, 5765841, 6406490, 7687788, 9609735, 11531682, 12812980, 17297523, 19219470, 23063364, 28829205, 34595046, 38438940, 57658410, 69190092, 86487615, 115316820, 172975230, 345950460, 1272969563, 2545939126, 3818908689, 5091878252, 6364847815, 7637817378, 11456726067, 12729695630, 15275634756, 19094543445, 22913452134, 25459391260, 34370178201, 38189086890, 45826904268, 57283630335, 68740356402, 76378173780, 114567260670, 137480712804, 171850891005, 229134521340, 343701782010, 687403564020]

約数ペア:

[(1, 687403564020), (2, 343701782010), (3, 229134521340), (4, 171850891005), (5, 137480712804), (6, 114567260670), (9, 76378173780), (10, 68740356402), (12, 57283630335), (15, 45826904268), (18, 38189086890), (20, 34370178201), (27, 25459391260), (30, 22913452134), (36, 19094543445), (45, 15275634756), (54, 12729695630), (60, 11456726067), (90, 7637817378), (108, 6364847815), (135, 5091878252), (180, 3818908689), (270, 2545939126), (540, 1272969563), (1987, 345950460), (3974, 172975230), (5961, 115316820), (7948, 86487615), (9935, 69190092), (11922, 57658410), (17883, 38438940), (19870, 34595046), (23844, 28829205), (29805, 23063364), (35766, 19219470), (39740, 17297523), (53649, 12812980), (59610, 11531682), (71532, 9609735), (89415, 7687788), (107298, 6406490), (119220, 5765841), (178830, 3843894), (214596, 3203245), (268245, 2562596), (357660, 1921947), (536490, 1281298), (640649, 1072980)]