257542380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{211}}^1\times {\mathrm{6781}}^1$

素因数の和:7007

約数の個数: 72

約数和(自身を含む): 785030064

約数和(自身を除く): 527487684

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 211, 422, 633, 844, 1055, 1266, 1899, 2110, 2532, 3165, 3798, 4220, 6330, 6781, 7596, 9495, 12660, 13562, 18990, 20343, 27124, 33905, 37980, 40686, 61029, 67810, 81372, 101715, 122058, 135620, 203430, 244116, 305145, 406860, 610290, 1220580, 1430791, 2861582, 4292373, 5723164, 7153955, 8584746, 12877119, 14307910, 17169492, 21461865, 25754238, 28615820, 42923730, 51508476, 64385595, 85847460, 128771190, 257542380]

約数ペア:

[(1, 257542380), (2, 128771190), (3, 85847460), (4, 64385595), (5, 51508476), (6, 42923730), (9, 28615820), (10, 25754238), (12, 21461865), (15, 17169492), (18, 14307910), (20, 12877119), (30, 8584746), (36, 7153955), (45, 5723164), (60, 4292373), (90, 2861582), (180, 1430791), (211, 1220580), (422, 610290), (633, 406860), (844, 305145), (1055, 244116), (1266, 203430), (1899, 135620), (2110, 122058), (2532, 101715), (3165, 81372), (3798, 67810), (4220, 61029), (6330, 40686), (6781, 37980), (7596, 33905), (9495, 27124), (12660, 20343), (13562, 18990)]