18921798

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{263}}^1\times {\mathrm{571}}^1$

素因数の和:849

約数の個数: 48

約数和(自身を含む): 47114496

約数和(自身を除く): 28192698

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 263, 526, 571, 789, 1142, 1578, 1713, 1841, 2367, 3426, 3682, 3997, 4734, 5139, 5523, 7994, 10278, 11046, 11991, 16569, 23982, 33138, 35973, 71946, 150173, 300346, 450519, 901038, 1051211, 1351557, 2102422, 2703114, 3153633, 6307266, 9460899, 18921798]

約数ペア:

[(1, 18921798), (2, 9460899), (3, 6307266), (6, 3153633), (7, 2703114), (9, 2102422), (14, 1351557), (18, 1051211), (21, 901038), (42, 450519), (63, 300346), (126, 150173), (263, 71946), (526, 35973), (571, 33138), (789, 23982), (1142, 16569), (1578, 11991), (1713, 11046), (1841, 10278), (2367, 7994), (3426, 5523), (3682, 5139), (3997, 4734)]