257670

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{409}}^1$

素因数の和:429

約数の個数: 48

約数和(自身を含む): 767520

約数和(自身を除く): 509850

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 409, 630, 818, 1227, 2045, 2454, 2863, 3681, 4090, 5726, 6135, 7362, 8589, 12270, 14315, 17178, 18405, 25767, 28630, 36810, 42945, 51534, 85890, 128835, 257670]

約数ペア:

[(1, 257670), (2, 128835), (3, 85890), (5, 51534), (6, 42945), (7, 36810), (9, 28630), (10, 25767), (14, 18405), (15, 17178), (18, 14315), (21, 12270), (30, 8589), (35, 7362), (42, 6135), (45, 5726), (63, 4090), (70, 3681), (90, 2863), (105, 2454), (126, 2045), (210, 1227), (315, 818), (409, 630)]