257041520

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{60623}}^1$

素因数の和:60689

約数の個数: 40

約数和(自身を含む): 608907456

約数和(自身を除く): 351865936

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 60623, 121246, 242492, 303115, 484984, 606230, 969968, 1212460, 2424920, 3213019, 4849840, 6426038, 12852076, 16065095, 25704152, 32130190, 51408304, 64260380, 128520760, 257041520]

約数ペア:

[(1, 257041520), (2, 128520760), (4, 64260380), (5, 51408304), (8, 32130190), (10, 25704152), (16, 16065095), (20, 12852076), (40, 6426038), (53, 4849840), (80, 3213019), (106, 2424920), (212, 1212460), (265, 969968), (424, 606230), (530, 484984), (848, 303115), (1060, 242492), (2120, 121246), (4240, 60623)]