19981656

素因数分解:

$2^3\times 3^2\times {\mathrm{191}}^1\times {\mathrm{1453}}^1$

素因数の和:1656

約数の個数: 48

約数和(自身を含む): 54437760

約数和(自身を除く): 34456104

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 191, 382, 573, 764, 1146, 1453, 1528, 1719, 2292, 2906, 3438, 4359, 4584, 5812, 6876, 8718, 11624, 13077, 13752, 17436, 26154, 34872, 52308, 104616, 277523, 555046, 832569, 1110092, 1665138, 2220184, 2497707, 3330276, 4995414, 6660552, 9990828, 19981656]

約数ペア:

[(1, 19981656), (2, 9990828), (3, 6660552), (4, 4995414), (6, 3330276), (8, 2497707), (9, 2220184), (12, 1665138), (18, 1110092), (24, 832569), (36, 555046), (72, 277523), (191, 104616), (382, 52308), (573, 34872), (764, 26154), (1146, 17436), (1453, 13752), (1528, 13077), (1719, 11624), (2292, 8718), (2906, 6876), (3438, 5812), (4359, 4584)]