21196396

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{7691}}^1$

素因数の和:7761

約数の個数: 24

約数和(自身を含む): 40706064

約数和(自身を除く): 19509668

約数列:

[1, 2, 4, 13, 26, 52, 53, 106, 212, 689, 1378, 2756, 7691, 15382, 30764, 99983, 199966, 399932, 407623, 815246, 1630492, 5299099, 10598198, 21196396]

約数ペア:

[(1, 21196396), (2, 10598198), (4, 5299099), (13, 1630492), (26, 815246), (52, 407623), (53, 399932), (106, 199966), (212, 99983), (689, 30764), (1378, 15382), (2756, 7691)]