217491320

素因数分解:

$2^3\times 5^1\times {\mathrm{1423}}^1\times {\mathrm{3821}}^1$

素因数の和:5255

約数の個数: 32

約数和(自身を含む): 489827520

約数和(自身を除く): 272336200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1423, 2846, 3821, 5692, 7115, 7642, 11384, 14230, 15284, 19105, 28460, 30568, 38210, 56920, 76420, 152840, 5437283, 10874566, 21749132, 27186415, 43498264, 54372830, 108745660, 217491320]

約数ペア:

[(1, 217491320), (2, 108745660), (4, 54372830), (5, 43498264), (8, 27186415), (10, 21749132), (20, 10874566), (40, 5437283), (1423, 152840), (2846, 76420), (3821, 56920), (5692, 38210), (7115, 30568), (7642, 28460), (11384, 19105), (14230, 15284)]