21908328

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{71}}^1$

素因数の和:159

約数の個数: 128

約数和(自身を含む): 63866880

約数和(自身を除く): 41958552

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 23, 24, 26, 39, 43, 46, 52, 69, 71, 78, 86, 92, 104, 129, 138, 142, 156, 172, 184, 213, 258, 276, 284, 299, 312, 344, 426, 516, 552, 559, 568, 598, 852, 897, 923, 989, 1032, 1118, 1196, 1633, 1677, 1704, 1794, 1846, 1978, 2236, 2392, 2769, 2967, 3053, 3266, 3354, 3588, 3692, 3956, 4472, 4899, 5538, 5934, 6106, 6532, 6708, 7176, 7384, 7912, 9159, 9798, 11076, 11868, 12212, 12857, 13064, 13416, 18318, 19596, 21229, 22152, 23736, 24424, 25714, 36636, 38571, 39192, 39689, 42458, 51428, 63687, 70219, 73272, 77142, 79378, 84916, 102856, 119067, 127374, 140438, 154284, 158756, 169832, 210657, 238134, 254748, 280876, 308568, 317512, 421314, 476268, 509496, 561752, 842628, 912847, 952536, 1685256, 1825694, 2738541, 3651388, 5477082, 7302776, 10954164, 21908328]

約数ペア:

[(1, 21908328), (2, 10954164), (3, 7302776), (4, 5477082), (6, 3651388), (8, 2738541), (12, 1825694), (13, 1685256), (23, 952536), (24, 912847), (26, 842628), (39, 561752), (43, 509496), (46, 476268), (52, 421314), (69, 317512), (71, 308568), (78, 280876), (86, 254748), (92, 238134), (104, 210657), (129, 169832), (138, 158756), (142, 154284), (156, 140438), (172, 127374), (184, 119067), (213, 102856), (258, 84916), (276, 79378), (284, 77142), (299, 73272), (312, 70219), (344, 63687), (426, 51428), (516, 42458), (552, 39689), (559, 39192), (568, 38571), (598, 36636), (852, 25714), (897, 24424), (923, 23736), (989, 22152), (1032, 21229), (1118, 19596), (1196, 18318), (1633, 13416), (1677, 13064), (1704, 12857), (1794, 12212), (1846, 11868), (1978, 11076), (2236, 9798), (2392, 9159), (2769, 7912), (2967, 7384), (3053, 7176), (3266, 6708), (3354, 6532), (3588, 6106), (3692, 5934), (3956, 5538), (4472, 4899)]