257749380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{204563}}^1$

素因数の和:204585

約数の個数: 72

約数和(自身を含む): 893535552

約数和(自身を除く): 635786172

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 204563, 409126, 613689, 818252, 1022815, 1227378, 1431941, 1841067, 2045630, 2454756, 2863882, 3068445, 3682134, 4091260, 4295823, 5727764, 6136890, 7159705, 7364268, 8591646, 9205335, 12273780, 12887469, 14319410, 17183292, 18410670, 21479115, 25774938, 28638820, 36821340, 42958230, 51549876, 64437345, 85916460, 128874690, 257749380]

約数ペア:

[(1, 257749380), (2, 128874690), (3, 85916460), (4, 64437345), (5, 51549876), (6, 42958230), (7, 36821340), (9, 28638820), (10, 25774938), (12, 21479115), (14, 18410670), (15, 17183292), (18, 14319410), (20, 12887469), (21, 12273780), (28, 9205335), (30, 8591646), (35, 7364268), (36, 7159705), (42, 6136890), (45, 5727764), (60, 4295823), (63, 4091260), (70, 3682134), (84, 3068445), (90, 2863882), (105, 2454756), (126, 2045630), (140, 1841067), (180, 1431941), (210, 1227378), (252, 1022815), (315, 818252), (420, 613689), (630, 409126), (1260, 204563)]