81979380

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{65063}}^1$

素因数の和:65085

約数の個数: 72

約数和(自身を含む): 284199552

約数和(自身を除く): 202220172

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, 65063, 130126, 195189, 260252, 325315, 390378, 455441, 585567, 650630, 780756, 910882, 975945, 1171134, 1301260, 1366323, 1821764, 1951890, 2277205, 2342268, 2732646, 2927835, 3903780, 4098969, 4554410, 5465292, 5855670, 6831615, 8197938, 9108820, 11711340, 13663230, 16395876, 20494845, 27326460, 40989690, 81979380]

約数ペア:

[(1, 81979380), (2, 40989690), (3, 27326460), (4, 20494845), (5, 16395876), (6, 13663230), (7, 11711340), (9, 9108820), (10, 8197938), (12, 6831615), (14, 5855670), (15, 5465292), (18, 4554410), (20, 4098969), (21, 3903780), (28, 2927835), (30, 2732646), (35, 2342268), (36, 2277205), (42, 1951890), (45, 1821764), (60, 1366323), (63, 1301260), (70, 1171134), (84, 975945), (90, 910882), (105, 780756), (126, 650630), (140, 585567), (180, 455441), (210, 390378), (252, 325315), (315, 260252), (420, 195189), (630, 130126), (1260, 65063)]