21837480

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{25997}}^1$

素因数の和:26018

約数の個数: 64

約数和(自身を含む): 74874240

約数和(自身を除く): 53036760

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 25997, 51994, 77991, 103988, 129985, 155982, 181979, 207976, 259970, 311964, 363958, 389955, 519940, 545937, 623928, 727916, 779910, 909895, 1039880, 1091874, 1455832, 1559820, 1819790, 2183748, 2729685, 3119640, 3639580, 4367496, 5459370, 7279160, 10918740, 21837480]

約数ペア:

[(1, 21837480), (2, 10918740), (3, 7279160), (4, 5459370), (5, 4367496), (6, 3639580), (7, 3119640), (8, 2729685), (10, 2183748), (12, 1819790), (14, 1559820), (15, 1455832), (20, 1091874), (21, 1039880), (24, 909895), (28, 779910), (30, 727916), (35, 623928), (40, 545937), (42, 519940), (56, 389955), (60, 363958), (70, 311964), (84, 259970), (105, 207976), (120, 181979), (140, 155982), (168, 129985), (210, 103988), (280, 77991), (420, 51994), (840, 25997)]