21841659

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{257}}^1$

素因数の和:360

約数の個数: 48

約数和(自身を含む): 38638080

約数和(自身を除く): 16796421

約数列:

[1, 3, 7, 9, 19, 21, 57, 63, 71, 133, 171, 213, 257, 399, 497, 639, 771, 1197, 1349, 1491, 1799, 2313, 4047, 4473, 4883, 5397, 9443, 12141, 14649, 16191, 18247, 28329, 34181, 43947, 54741, 84987, 102543, 127729, 164223, 307629, 346693, 383187, 1040079, 1149561, 2426851, 3120237, 7280553, 21841659]

約数ペア:

[(1, 21841659), (3, 7280553), (7, 3120237), (9, 2426851), (19, 1149561), (21, 1040079), (57, 383187), (63, 346693), (71, 307629), (133, 164223), (171, 127729), (213, 102543), (257, 84987), (399, 54741), (497, 43947), (639, 34181), (771, 28329), (1197, 18247), (1349, 16191), (1491, 14649), (1799, 12141), (2313, 9443), (4047, 5397), (4473, 4883)]