21240078

素因数分解:

$2^1\times 3^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{443}}^1$

素因数の和:640

約数の個数: 32

約数和(自身を含む): 43604352

約数和(自身を除く): 22364274

約数列:

[1, 2, 3, 6, 61, 122, 131, 183, 262, 366, 393, 443, 786, 886, 1329, 2658, 7991, 15982, 23973, 27023, 47946, 54046, 58033, 81069, 116066, 162138, 174099, 348198, 3540013, 7080026, 10620039, 21240078]

約数ペア:

[(1, 21240078), (2, 10620039), (3, 7080026), (6, 3540013), (61, 348198), (122, 174099), (131, 162138), (183, 116066), (262, 81069), (366, 58033), (393, 54046), (443, 47946), (786, 27023), (886, 23973), (1329, 15982), (2658, 7991)]