81707640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{461}}^1$

素因数の和:693

約数の個数: 128

約数和(自身を含む): 282078720

約数和(自身を除く): 200371080

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 211, 280, 420, 422, 461, 633, 840, 844, 922, 1055, 1266, 1383, 1477, 1688, 1844, 2110, 2305, 2532, 2766, 2954, 3165, 3227, 3688, 4220, 4431, 4610, 5064, 5532, 5908, 6330, 6454, 6915, 7385, 8440, 8862, 9220, 9681, 11064, 11816, 12660, 12908, 13830, 14770, 16135, 17724, 18440, 19362, 22155, 25320, 25816, 27660, 29540, 32270, 35448, 38724, 44310, 48405, 55320, 59080, 64540, 77448, 88620, 96810, 97271, 129080, 177240, 193620, 194542, 291813, 387240, 389084, 486355, 583626, 680897, 778168, 972710, 1167252, 1361794, 1459065, 1945420, 2042691, 2334504, 2723588, 2918130, 3404485, 3890840, 4085382, 5447176, 5836260, 6808970, 8170764, 10213455, 11672520, 13617940, 16341528, 20426910, 27235880, 40853820, 81707640]

約数ペア:

[(1, 81707640), (2, 40853820), (3, 27235880), (4, 20426910), (5, 16341528), (6, 13617940), (7, 11672520), (8, 10213455), (10, 8170764), (12, 6808970), (14, 5836260), (15, 5447176), (20, 4085382), (21, 3890840), (24, 3404485), (28, 2918130), (30, 2723588), (35, 2334504), (40, 2042691), (42, 1945420), (56, 1459065), (60, 1361794), (70, 1167252), (84, 972710), (105, 778168), (120, 680897), (140, 583626), (168, 486355), (210, 389084), (211, 387240), (280, 291813), (420, 194542), (422, 193620), (461, 177240), (633, 129080), (840, 97271), (844, 96810), (922, 88620), (1055, 77448), (1266, 64540), (1383, 59080), (1477, 55320), (1688, 48405), (1844, 44310), (2110, 38724), (2305, 35448), (2532, 32270), (2766, 29540), (2954, 27660), (3165, 25816), (3227, 25320), (3688, 22155), (4220, 19362), (4431, 18440), (4610, 17724), (5064, 16135), (5532, 14770), (5908, 13830), (6330, 12908), (6454, 12660), (6915, 11816), (7385, 11064), (8440, 9681), (8862, 9220)]