21679854

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{1993}}^1$

素因数の和:2049

約数の個数: 48

約数和(自身を含む): 51828048

約数和(自身を除く): 30148194

約数列:

[1, 2, 3, 6, 7, 14, 21, 37, 42, 49, 74, 98, 111, 147, 222, 259, 294, 518, 777, 1554, 1813, 1993, 3626, 3986, 5439, 5979, 10878, 11958, 13951, 27902, 41853, 73741, 83706, 97657, 147482, 195314, 221223, 292971, 442446, 516187, 585942, 1032374, 1548561, 3097122, 3613309, 7226618, 10839927, 21679854]

約数ペア:

[(1, 21679854), (2, 10839927), (3, 7226618), (6, 3613309), (7, 3097122), (14, 1548561), (21, 1032374), (37, 585942), (42, 516187), (49, 442446), (74, 292971), (98, 221223), (111, 195314), (147, 147482), (222, 97657), (259, 83706), (294, 73741), (518, 41853), (777, 27902), (1554, 13951), (1813, 11958), (1993, 10878), (3626, 5979), (3986, 5439)]