81075780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{450421}}^1$

素因数の和:450436

約数の個数: 36

約数和(自身を含む): 245930412

約数和(自身を除く): 164854632

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 450421, 900842, 1351263, 1801684, 2252105, 2702526, 4053789, 4504210, 5405052, 6756315, 8107578, 9008420, 13512630, 16215156, 20268945, 27025260, 40537890, 81075780]

約数ペア:

[(1, 81075780), (2, 40537890), (3, 27025260), (4, 20268945), (5, 16215156), (6, 13512630), (9, 9008420), (10, 8107578), (12, 6756315), (15, 5405052), (18, 4504210), (20, 4053789), (30, 2702526), (36, 2252105), (45, 1801684), (60, 1351263), (90, 900842), (180, 450421)]