20879964

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{389}}^1$

素因数の和:480

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 42019236

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 71, 84, 108, 126, 142, 189, 213, 252, 284, 378, 389, 426, 497, 639, 756, 778, 852, 994, 1167, 1278, 1491, 1556, 1917, 1988, 2334, 2556, 2723, 2982, 3501, 3834, 4473, 4668, 5446, 5964, 7002, 7668, 8169, 8946, 10503, 10892, 13419, 14004, 16338, 17892, 21006, 24507, 26838, 27619, 32676, 42012, 49014, 53676, 55238, 73521, 82857, 98028, 110476, 147042, 165714, 193333, 248571, 294084, 331428, 386666, 497142, 579999, 745713, 773332, 994284, 1159998, 1491426, 1739997, 2319996, 2982852, 3479994, 5219991, 6959988, 10439982, 20879964]

約数ペア:

[(1, 20879964), (2, 10439982), (3, 6959988), (4, 5219991), (6, 3479994), (7, 2982852), (9, 2319996), (12, 1739997), (14, 1491426), (18, 1159998), (21, 994284), (27, 773332), (28, 745713), (36, 579999), (42, 497142), (54, 386666), (63, 331428), (71, 294084), (84, 248571), (108, 193333), (126, 165714), (142, 147042), (189, 110476), (213, 98028), (252, 82857), (284, 73521), (378, 55238), (389, 53676), (426, 49014), (497, 42012), (639, 32676), (756, 27619), (778, 26838), (852, 24507), (994, 21006), (1167, 17892), (1278, 16338), (1491, 14004), (1556, 13419), (1917, 10892), (1988, 10503), (2334, 8946), (2556, 8169), (2723, 7668), (2982, 7002), (3501, 5964), (3834, 5446), (4473, 4668)]