389620021

素因数分解:

$7^2\times {\mathrm{79}}^1\times {\mathrm{251}}^1\times {\mathrm{401}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 461946240

約数和(自身を除く): 72326219

約数列:

[1, 7, 49, 79, 251, 401, 553, 1757, 2807, 3871, 12299, 19649, 19829, 31679, 100651, 138803, 221753, 704557, 971621, 1552271, 4931899, 7951429, 55660003, 389620021]

約数ペア:

[(1, 389620021), (7, 55660003), (49, 7951429), (79, 4931899), (251, 1552271), (401, 971621), (553, 704557), (1757, 221753), (2807, 138803), (3871, 100651), (12299, 31679), (19649, 19829)]