21172954

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^3$

素因数の和:143

約数の個数: 32

約数和(自身を含む): 37483200

約数和(自身を除く): 16310246

約数列:

[1, 2, 11, 19, 22, 37, 38, 74, 209, 407, 418, 703, 814, 1369, 1406, 2738, 7733, 15059, 15466, 26011, 30118, 50653, 52022, 101306, 286121, 557183, 572242, 962407, 1114366, 1924814, 10586477, 21172954]

約数ペア:

[(1, 21172954), (2, 10586477), (11, 1924814), (19, 1114366), (22, 962407), (37, 572242), (38, 557183), (74, 286121), (209, 101306), (407, 52022), (418, 50653), (703, 30118), (814, 26011), (1369, 15466), (1406, 15059), (2738, 7733)]