19904580

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{110581}}^1$

素因数の和:110596

約数の個数: 36

約数和(自身を含む): 60377772

約数和(自身を除く): 40473192

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 110581, 221162, 331743, 442324, 552905, 663486, 995229, 1105810, 1326972, 1658715, 1990458, 2211620, 3317430, 3980916, 4976145, 6634860, 9952290, 19904580]

約数ペア:

[(1, 19904580), (2, 9952290), (3, 6634860), (4, 4976145), (5, 3980916), (6, 3317430), (9, 2211620), (10, 1990458), (12, 1658715), (15, 1326972), (18, 1105810), (20, 995229), (30, 663486), (36, 552905), (45, 442324), (60, 331743), (90, 221162), (180, 110581)]