21239904

素因数分解:

$2^5\times 3^1\times 7^1\times {\mathrm{31607}}^1$

素因数の和:31627

約数の個数: 48

約数和(自身を含む): 63721728

約数和(自身を除く): 42481824

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 32, 42, 48, 56, 84, 96, 112, 168, 224, 336, 672, 31607, 63214, 94821, 126428, 189642, 221249, 252856, 379284, 442498, 505712, 663747, 758568, 884996, 1011424, 1327494, 1517136, 1769992, 2654988, 3034272, 3539984, 5309976, 7079968, 10619952, 21239904]

約数ペア:

[(1, 21239904), (2, 10619952), (3, 7079968), (4, 5309976), (6, 3539984), (7, 3034272), (8, 2654988), (12, 1769992), (14, 1517136), (16, 1327494), (21, 1011424), (24, 884996), (28, 758568), (32, 663747), (42, 505712), (48, 442498), (56, 379284), (84, 252856), (96, 221249), (112, 189642), (168, 126428), (224, 94821), (336, 63214), (672, 31607)]