81886980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{241}}^1\times {\mathrm{809}}^1$

素因数の和:1069

約数の個数: 96

約数和(自身を含む): 263450880

約数和(自身を除く): 181563900

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 241, 420, 482, 723, 809, 964, 1205, 1446, 1618, 1687, 2410, 2427, 2892, 3236, 3374, 3615, 4045, 4820, 4854, 5061, 5663, 6748, 7230, 8090, 8435, 9708, 10122, 11326, 12135, 14460, 16180, 16870, 16989, 20244, 22652, 24270, 25305, 28315, 33740, 33978, 48540, 50610, 56630, 67956, 84945, 101220, 113260, 169890, 194969, 339780, 389938, 584907, 779876, 974845, 1169814, 1364783, 1949690, 2339628, 2729566, 2924535, 3899380, 4094349, 5459132, 5849070, 6823915, 8188698, 11698140, 13647830, 16377396, 20471745, 27295660, 40943490, 81886980]

約数ペア:

[(1, 81886980), (2, 40943490), (3, 27295660), (4, 20471745), (5, 16377396), (6, 13647830), (7, 11698140), (10, 8188698), (12, 6823915), (14, 5849070), (15, 5459132), (20, 4094349), (21, 3899380), (28, 2924535), (30, 2729566), (35, 2339628), (42, 1949690), (60, 1364783), (70, 1169814), (84, 974845), (105, 779876), (140, 584907), (210, 389938), (241, 339780), (420, 194969), (482, 169890), (723, 113260), (809, 101220), (964, 84945), (1205, 67956), (1446, 56630), (1618, 50610), (1687, 48540), (2410, 33978), (2427, 33740), (2892, 28315), (3236, 25305), (3374, 24270), (3615, 22652), (4045, 20244), (4820, 16989), (4854, 16870), (5061, 16180), (5663, 14460), (6748, 12135), (7230, 11326), (8090, 10122), (8435, 9708)]