81860940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64969}}^1$

素因数の和:64991

約数の個数: 72

約数和(自身を含む): 283788960

約数和(自身を除く): 201928020

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, 64969, 129938, 194907, 259876, 324845, 389814, 454783, 584721, 649690, 779628, 909566, 974535, 1169442, 1299380, 1364349, 1819132, 1949070, 2273915, 2338884, 2728698, 2923605, 3898140, 4093047, 4547830, 5457396, 5847210, 6821745, 8186094, 9095660, 11694420, 13643490, 16372188, 20465235, 27286980, 40930470, 81860940]

約数ペア:

[(1, 81860940), (2, 40930470), (3, 27286980), (4, 20465235), (5, 16372188), (6, 13643490), (7, 11694420), (9, 9095660), (10, 8186094), (12, 6821745), (14, 5847210), (15, 5457396), (18, 4547830), (20, 4093047), (21, 3898140), (28, 2923605), (30, 2728698), (35, 2338884), (36, 2273915), (42, 1949070), (45, 1819132), (60, 1364349), (63, 1299380), (70, 1169442), (84, 974535), (90, 909566), (105, 779628), (126, 649690), (140, 584721), (180, 454783), (210, 389814), (252, 324845), (315, 259876), (420, 194907), (630, 129938), (1260, 64969)]