21688160

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10427}}^1$

素因数の和:10455

約数の個数: 48

約数和(自身を含む): 55184976

約数和(自身を除く): 33496816

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10427, 20854, 41708, 52135, 83416, 104270, 135551, 166832, 208540, 271102, 333664, 417080, 542204, 677755, 834160, 1084408, 1355510, 1668320, 2168816, 2711020, 4337632, 5422040, 10844080, 21688160]

約数ペア:

[(1, 21688160), (2, 10844080), (4, 5422040), (5, 4337632), (8, 2711020), (10, 2168816), (13, 1668320), (16, 1355510), (20, 1084408), (26, 834160), (32, 677755), (40, 542204), (52, 417080), (65, 333664), (80, 271102), (104, 208540), (130, 166832), (160, 135551), (208, 104270), (260, 83416), (416, 52135), (520, 41708), (1040, 20854), (2080, 10427)]