278545540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4937}}^1$

素因数の和:4997

約数の個数: 96

約数和(自身を含む): 743307264

約数和(自身を除く): 464761724

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 31, 35, 52, 62, 65, 70, 91, 124, 130, 140, 155, 182, 217, 260, 310, 364, 403, 434, 455, 620, 806, 868, 910, 1085, 1612, 1820, 2015, 2170, 2821, 4030, 4340, 4937, 5642, 8060, 9874, 11284, 14105, 19748, 24685, 28210, 34559, 49370, 56420, 64181, 69118, 98740, 128362, 138236, 153047, 172795, 256724, 306094, 320905, 345590, 449267, 612188, 641810, 691180, 765235, 898534, 1071329, 1283620, 1530470, 1797068, 1989611, 2142658, 2246335, 3060940, 3979222, 4285316, 4492670, 5356645, 7958444, 8985340, 9948055, 10713290, 13927277, 19896110, 21426580, 27854554, 39792220, 55709108, 69636385, 139272770, 278545540]

約数ペア:

[(1, 278545540), (2, 139272770), (4, 69636385), (5, 55709108), (7, 39792220), (10, 27854554), (13, 21426580), (14, 19896110), (20, 13927277), (26, 10713290), (28, 9948055), (31, 8985340), (35, 7958444), (52, 5356645), (62, 4492670), (65, 4285316), (70, 3979222), (91, 3060940), (124, 2246335), (130, 2142658), (140, 1989611), (155, 1797068), (182, 1530470), (217, 1283620), (260, 1071329), (310, 898534), (364, 765235), (403, 691180), (434, 641810), (455, 612188), (620, 449267), (806, 345590), (868, 320905), (910, 306094), (1085, 256724), (1612, 172795), (1820, 153047), (2015, 138236), (2170, 128362), (2821, 98740), (4030, 69118), (4340, 64181), (4937, 56420), (5642, 49370), (8060, 34559), (9874, 28210), (11284, 24685), (14105, 19748)]