201811761380

素因数分解:

$2^2\times 5^1\times {\mathrm{643}}^1\times {\mathrm{769}}^1\times {\mathrm{20407}}^1$

素因数の和:21828

約数の個数: 48

約数和(自身を含む): 425036599680

約数和(自身を除く): 223224838300

約数列:

[1, 2, 4, 5, 10, 20, 643, 769, 1286, 1538, 2572, 3076, 3215, 3845, 6430, 7690, 12860, 15380, 20407, 40814, 81628, 102035, 204070, 408140, 494467, 988934, 1977868, 2472335, 4944670, 9889340, 13121701, 15692983, 26243402, 31385966, 52486804, 62771932, 65608505, 78464915, 131217010, 156929830, 262434020, 313859660, 10090588069, 20181176138, 40362352276, 50452940345, 100905880690, 201811761380]

約数ペア:

[(1, 201811761380), (2, 100905880690), (4, 50452940345), (5, 40362352276), (10, 20181176138), (20, 10090588069), (643, 313859660), (769, 262434020), (1286, 156929830), (1538, 131217010), (2572, 78464915), (3076, 65608505), (3215, 62771932), (3845, 52486804), (6430, 31385966), (7690, 26243402), (12860, 15692983), (15380, 13121701), (20407, 9889340), (40814, 4944670), (81628, 2472335), (102035, 1977868), (204070, 988934), (408140, 494467)]